564,187 resultados para simSearch:679-06673702,k

  • 679-06673702

    DNA nucleosome, molecular model. This is the fundamental repeating unit used to package DNA (deoxyribonucleic acid) inside cell nuclei. DNA's double helix structure (red) is seen here tightly coiled round a core of histone proteins (green).

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  • 679-06673638

    DNA (deoxyribonucleic acid), molecular model.

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  • 679-06673637

    DNA (deoxyribonucleic acid), molecular model.

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  • 679-06673636

    DNA (deoxyribonucleic acid), molecular model.

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  • 679-06673635

    DNA (deoxyribonucleic acid), molecular model.

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  • 679-06673634

    DNA (deoxyribonucleic acid), molecular model.

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  • 679-06673633

    DNA (deoxyribonucleic acid), molecular model.

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  • 679-06673632

    DNA (deoxyribonucleic acid), molecular model.

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  • 679-06673699

    MicroRNA (miRNA), molecular model. This miRNA (micro ribonucleic acid) oligonucleotide regulates the expression of a target gene. The miRNA shown here is the human miR-17 stem-loop (hsa-mir-17), which is believed to play a role in several types of breast cancer.

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  • 679-09021714

    The nucleosome consists of a DNA double helix wrapped around a core of histone proteins. Stylized combination of a semi-transparent surface model with a cartoon representation. Histone protein coloured blue, DNA pink.

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  • 679-06673701

    MicroRNA (miRNA), molecular model. This miRNA (micro ribonucleic acid) oligonucleotide regulates the expression of a target gene. The miRNA shown here is the human miR-17 stem-loop (hsa-mir-17), which is believed to play a role in several types of breast cancer.

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  • 679-06673700

    MicroRNA (miRNA), molecular model. This miRNA (micro ribonucleic acid) oligonucleotide regulates the expression of a target gene. The miRNA shown here is the human miR-17 stem-loop (hsa-mir-17), which is believed to play a role in several types of breast cancer.

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  • 679-06673698

    MicroRNA (miRNA) precursor, molecular model. This miRNA (micro ribonucleic acid) precursor will be further processed into an even shorter mature miRNA oligonucleotide that can regulate the expression of a target gene. The precursor shown here is the human miR-17 stem-loop (hsa-mir-17), which is believed to play a role in several types of breast cancer.

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  • 679-06673697

    MicroRNA (miRNA) precursor, molecular model. This miRNA (micro ribonucleic acid) precursor will be further processed into an even shorter mature miRNA oligonucleotide that can regulate the expression of a target gene. The precursor shown here is the human miR-17 stem-loop (hsa-mir-17), which is believed to play a role in several types of breast cancer.

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  • 679-09160472

    Genetic blood disorders, conceptual composite image. Scanning electron microscopy (SEM) and computer generated image (CGI) of DNA (deoxyribonucleic acid) molecules (helices) and red blood cells. There are a number of blood disorders that are caused by genetic mutations and can therefore be passed from parent to child. Such disorders include haemophilia, sickle cell anaemia and thalassaemia.

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  • 679-06673695

    Transfer RNA-synthetase complex molecule. Molecular model of a human tryptophanyl-tRNA synthetase molecule (red) complexed with a tRNA(Trp) molecule (blue). tRNA (transfer ribonucleic acid) translates messenger RNA (mRNA) into a protein product. Each tRNA molecule carries a specific amino acid, in this case tryptophan. Tryptophan is attached to tRNA(Trp) by the enzyme tryptophanyl-tRNA synthetase.

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  • 679-07763760

    Gene activator protein. Molecular model of catabolite gene activator protein (CAP, yellow) complexed with deoxyribonucleic acid (DNA, red and blue) and RNA polymerase (green and pink). CAP activates genes that enable bacteria to use an alternative energy source when glucose, the preferred energy source, is unavailable. Falling levels of glucose cause an increase in the messenger molecule cAMP, whi

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  • 679-07763677

    Nucleosome, molecular model. A nucleosome is a subunit of chromatin, the substance that forms chromosomes. It consists of a short length of DNA (deoxyribonucleic acid, red and blue helix) wrapped around a core of eight histone proteins (centre). Here the secondary structure of the proteins is shown. The structure of the nucleosome allows large quantities of DNA, the genetic material, to be package

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  • 679-07763668

    Nucleosome, molecular model. A nucleosome is a subunit of chromatin, the substance that forms chromosomes. It consists of a short length of DNA (deoxyribonucleic acid, red and blue helix) wrapped around a core of eight histone proteins (centre). Here the secondary structure of the proteins is shown. The structure of the nucleosome allows large quantities of DNA, the genetic material, to be package

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  • 679-07763623

    Gene activator protein. Molecular model of catabolite gene activator protein (CAP, pink and green) bound to a molecule of deoxyribonucleic acid (DNA, across top). CAP activates genes that enable bacteria to use an alternative energy source when glucose, the preferred energy source, is unavailable. Falling levels of glucose cause an increase in the messenger molecule cAMP, which binds to CAP enabli

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  • 679-07763589

    Nucleosome, molecular model. A nucleosome is a subunit of chromatin, the substance that forms chromosomes. It consists of a short length of DNA (deoxyribonucleic acid, red and blue helix) wrapped around a core of eight histone proteins (centre). Here the secondary structure of the proteins is shown. The structure of the nucleosome allows large quantities of DNA, the genetic material, to be package

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  • 679-07150720

    Gene activator protein. Molecular model of catabolite gene activator protein (CAP, yellow) complexed with deoxyribonucleic acid (DNA, red and blue) and RNA polymerase (green and pink). CAP activates genes that enable bacteria to use an alternative energy source when glucose, the preferred energy source, is unavailable. Falling levels of glucose cause an increase in the messenger molecule cAMP, whi

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  • 679-07150637

    Nucleosome, molecular model. A nucleosome is a subunit of chromatin, the substance that forms chromosomes. It consists of a short length of DNA (deoxyribonucleic acid, red and blue helix) wrapped around a core of eight histone proteins (centre). Here the secondary structure of the proteins is shown. The structure of the nucleosome allows large quantities of DNA, the genetic material, to be package

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  • 679-07150628

    Nucleosome, molecular model. A nucleosome is a subunit of chromatin, the substance that forms chromosomes. It consists of a short length of DNA (deoxyribonucleic acid, red and blue helix) wrapped around a core of eight histone proteins (centre). Here the secondary structure of the proteins is shown. The structure of the nucleosome allows large quantities of DNA, the genetic material, to be package

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  • 679-07150583

    Gene activator protein. Molecular model of catabolite gene activator protein (CAP, pink and green) bound to a molecule of deoxyribonucleic acid (DNA, across top). CAP activates genes that enable bacteria to use an alternative energy source when glucose, the preferred energy source, is unavailable. Falling levels of glucose cause an increase in the messenger molecule cAMP, which binds to CAP enabli

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  • 679-07150549

    Nucleosome, molecular model. A nucleosome is a subunit of chromatin, the substance that forms chromosomes. It consists of a short length of DNA (deoxyribonucleic acid, red and blue helix) wrapped around a core of eight histone proteins (centre). Here the secondary structure of the proteins is shown. The structure of the nucleosome allows large quantities of DNA, the genetic material, to be package

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  • 679-06673696

    Transfer RNA-synthetase complex molecule. Molecular model of a human tryptophanyl-tRNA synthetase molecule (red) complexed with a tRNA(Trp) molecule (blue). tRNA (transfer ribonucleic acid) translates messenger RNA (mRNA) into a protein product. Each tRNA molecule carries a specific amino acid, in this case tryptophan. Tryptophan is attached to tRNA(Trp) by the enzyme tryptophanyl-tRNA synthetase.

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  • 679-05797109

    DNA, artwork

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  • 679-05797108

    DNA, artwork

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  • 679-07606953

    DNA molecule, computer artwork.

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  • 679-07606949

    DNA molecule, computer artwork.

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  • 679-07606947

    DNA molecule, computer artwork.

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  • 679-07763960

    HIV reverse transcription enzyme. Molecular model of the reverse transcriptase enzyme (pink) found in HIV (the human immunodeficiency virus), complexed with a DNA (deoxyribonucleic acid) molecule (green and blue) and the antigen-binding fragment (Fab) of an antibody (orange). Reverse transcriptase transcribes the single-stranded RNA (ribonucleic acid) genome of HIV into DNA that is capable of inte

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  • 679-07763909

    DNA tetranucleosome. Molecular model of four nucleosomes, or a tetranucleosome. Nucleosomes are the fundamental repeating unit used to package DNA (deoxyribonucleic acid) inside cell nuclei. DNA is the molecule that carries the genetic code that forms the basis of all life on Earth. DNA's double helix structure (light blue and light pink) is seen here tightly coiled round a core of histone protein

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  • 679-07763905

    TATA box-binding protein complex. Molecular model showing a yeast TATA box-binding protein (TBP) complexed with a strand of DNA (deoxyribonucleic acid, red and blue) and transcription factor IIA. TBP is a general transcription factor that binds specifically to the TATA box DNA sequence during DNA transcription. TATA boxes are found in the promoter region of a gene, the area where transcription is

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  • 679-07763904

    TATA box-binding protein and DNA. Molecular model showing a TATA box-binding protein (TBP) complexed with a strand of DNA (deoxyribonucleic acid, red and blue). TATA boxes are found in the promoter region of a gene, the area where transcription is initiated from.

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  • 679-07763888

    TATA box-binding protein complex. Molecular model showing a yeast TATA box-binding protein (TBP) complexed with a strand of DNA (deoxyribonucleic acid, red and blue) and transcription factor IIB. TBP is a general transcription factor that binds specifically to the TATA box DNA sequence during DNA transcription. TATA boxes are found in the promoter region of a gene, the area where transcription is

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  • 679-07763838

    Transcription factor and DNA molecule. Molecular model of glucocorticoid receptor (GR) transcription factor protein (pink and blue) complexed with a molecule of DNA (deoxyribonucleic acid, red and blue). Transcription factors regulate the transcription of DNA to RNA (ribonucleic acid) by the enzyme RNA polymerase. RNA is the intermediate product between a gene and its protein. When glucocorticoid

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  • 679-07763663

    LAC repressor bound to DNA. Molecular model of a LAC (lactose) repressor molecule (pink and turquoise) interacting with bacterial DNA (deoxyribonucleic acid, red and blue). The LAC repressor inhibits the expression of genes that code for an enzyme which metabolizes lactose in bacteria. It is only present when lactose levels are low. This ensures that the bacteria only produce machinery used for th

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  • 679-07763639

    DNA Holliday junction. Molecular model of a Holliday junction (centre) between homologous strands of DNA (deoxyribonucleic acid). A Holliday junction forms during crossing over, a natural genetic process that occurs between homologous chromosomes and leads to the switching of genetic material between the chromosomes. This recombination increases the genetic variation in a population.

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  • 679-07763621

    TATA box-binding protein and DNA. Molecular model showing a TATA box-binding protein (TBP) complexed with a strand of DNA (deoxyribonucleic acid, red and blue). TATA boxes are found in the promoter region of a gene, the area where transcription is initiated from.

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  • 679-07763615

    E. coli Holliday junction complex. Molecular model of a RuvA protein (red) in complex with a Holliday junction between homologous strands of DNA (deoxyribonucleic acid, blue) from an E. coli (Escherichia coli) bacterium. A Holliday junction forms during crossing over, a natural genetic process that occurs between homologous chromosomes and leads to the switching of genetic material between the chr

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  • 679-07763584

    TATA box-binding protein complex. Molecular model showing a yeast TATA box-binding protein (TBP) complexed with a strand of DNA (deoxyribonucleic acid, red and blue) and transcription factor IIB. TBP is a general transcription factor that binds specifically to the TATA box DNA sequence during DNA transcription. TATA boxes are found in the promoter region of a gene, the area where transcription is

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  • 679-07763575

    Type I topoisomerase bound to DNA. Molecular model showing a type I topoisomerase molecule (khaki) bound to a strand of DNA (deoxyribonucleic acid, red and blue). The topoisomerase enzymes assist in uncoiling DNA. DNA is usually stored in a supercoiled form, which must be unravelled before it can be replicated or translated into proteins. Type I topoisomerase changes the linkage in multiples of on

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  • 679-07763573

    Type I topoisomerase bound to DNA. Molecular model showing a type I topoisomerase molecule (khaki) bound to a strand of DNA (deoxyribonucleic acid, red and blue). The topoisomerase enzymes assist in uncoiling DNA. DNA is usually stored in a supercoiled form, which must be unravelled before it can be replicated or translated into proteins. Type I topoisomerase changes the linkage in multiples of on

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  • 679-07150978

    Opsin. Molecular model of a ligand-free opsin molecule. Opsins are found in photoreceptor cells (rods and cones) in the retina of the eye. This opsin molecule forms a complex with retinal, called rhodopsin or visual purple, in rod cells. The retinal molecule absorbs light, which causes it to change shape and separate from the opsin. This initiates the transmission of nerve impulses to the brain, l

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  • 679-07150920

    HIV reverse transcription enzyme. Molecular model of the reverse transcriptase enzyme (pink) found in HIV (the human immunodeficiency virus), complexed with a DNA (deoxyribonucleic acid) molecule (green and blue) and the antigen-binding fragment (Fab) of an antibody (orange). Reverse transcriptase transcribes the single-stranded RNA (ribonucleic acid) genome of HIV into DNA that is capable of inte

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  • 679-07150869

    DNA tetranucleosome. Molecular model of four nucleosomes, or a tetranucleosome. Nucleosomes are the fundamental repeating unit used to package DNA (deoxyribonucleic acid) inside cell nuclei. DNA is the molecule that carries the genetic code that forms the basis of all life on Earth. DNA's double helix structure (light blue and light pink) is seen here tightly coiled round a core of histone protein

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  • 679-07150865

    TATA box-binding protein complex. Molecular model showing a yeast TATA box-binding protein (TBP) complexed with a strand of DNA (deoxyribonucleic acid, red and blue) and transcription factor IIA. TBP is a general transcription factor that binds specifically to the TATA box DNA sequence during DNA transcription. TATA boxes are found in the promoter region of a gene, the area where transcription is

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  • 679-07150864

    TATA box-binding protein and DNA. Molecular model showing a TATA box-binding protein (TBP) complexed with a strand of DNA (deoxyribonucleic acid, red and blue). TATA boxes are found in the promoter region of a gene, the area where transcription is initiated from.

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  • 679-07150848

    TATA box-binding protein complex. Molecular model showing a yeast TATA box-binding protein (TBP) complexed with a strand of DNA (deoxyribonucleic acid, red and blue) and transcription factor IIB. TBP is a general transcription factor that binds specifically to the TATA box DNA sequence during DNA transcription. TATA boxes are found in the promoter region of a gene, the area where transcription is

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  • 679-07150798

    Transcription factor and DNA molecule. Molecular model of glucocorticoid receptor (GR) transcription factor protein (pink and blue) complexed with a molecule of DNA (deoxyribonucleic acid, red and blue). Transcription factors regulate the transcription of DNA to RNA (ribonucleic acid) by the enzyme RNA polymerase. RNA is the intermediate product between a gene and its protein. When glucocorticoid

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  • 679-07150623

    LAC repressor bound to DNA. Molecular model of a LAC (lactose) repressor molecule (pink and turquoise) interacting with bacterial DNA (deoxyribonucleic acid, red and blue). The LAC repressor inhibits the expression of genes that code for an enzyme which metabolizes lactose in bacteria. It is only present when lactose levels are low. This ensures that the bacteria only produce machinery used for th

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  • 679-07150599

    DNA Holliday junction. Molecular model of a Holliday junction (centre) between homologous strands of DNA (deoxyribonucleic acid). A Holliday junction forms during crossing over, a natural genetic process that occurs between homologous chromosomes and leads to the switching of genetic material between the chromosomes. This recombination increases the genetic variation in a population.

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  • 679-07150581

    TATA box-binding protein and DNA. Molecular model showing a TATA box-binding protein (TBP) complexed with a strand of DNA (deoxyribonucleic acid, red and blue). TATA boxes are found in the promoter region of a gene, the area where transcription is initiated from.

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  • 679-07150575

    E. coli Holliday junction complex. Molecular model of a RuvA protein (red) in complex with a Holliday junction between homologous strands of DNA (deoxyribonucleic acid, blue) from an E. coli (Escherichia coli) bacterium. A Holliday junction forms during crossing over, a natural genetic process that occurs between homologous chromosomes and leads to the switching of genetic material between the chr

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  • 679-07150544

    TATA box-binding protein complex. Molecular model showing a yeast TATA box-binding protein (TBP) complexed with a strand of DNA (deoxyribonucleic acid, red and blue) and transcription factor IIB. TBP is a general transcription factor that binds specifically to the TATA box DNA sequence during DNA transcription. TATA boxes are found in the promoter region of a gene, the area where transcription is

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  • 679-07150535

    Type I topoisomerase bound to DNA. Molecular model showing a type I topoisomerase molecule (khaki) bound to a strand of DNA (deoxyribonucleic acid, red and blue). The topoisomerase enzymes assist in uncoiling DNA. DNA is usually stored in a supercoiled form, which must be unravelled before it can be replicated or translated into proteins. Type I topoisomerase changes the linkage in multiples of on

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  • 679-07150534

    Type I topoisomerase bound to DNA. Molecular model showing a type I topoisomerase molecule (khaki) bound to a strand of DNA (deoxyribonucleic acid, red and blue). The topoisomerase enzymes assist in uncoiling DNA. DNA is usually stored in a supercoiled form, which must be unravelled before it can be replicated or translated into proteins. Type I topoisomerase changes the linkage in multiples of on

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  • 679-09184330

    Leukaemia, conceptual composite image. Scanning electron microscopy (SEM) and computer generated image (CGI) of DNA (deoxyribonucleic acid) molecules (helices) and red and white blood cells. Leukaemia is cancer of the white blood cells. Leukemias are caused by mutations in the DNA of blood cells. These genetic mutations change the way the blood cells reproduce and can also prevent them from funct

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  • 679-09184329

    Leukaemia, conceptual composite image. Scanning electron microscopy (SEM) and computer generated image (CGI) of DNA (deoxyribonucleic acid) molecules (helices) and red and white blood cells. Leukaemia is cancer of the white blood cells. Leukemias are caused by mutations in the DNA of blood cells. These genetic mutations change the way the blood cells reproduce and can also prevent them from funct

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  • 679-09184328

    Leukaemia, conceptual composite image. Scanning electron microscopy (SEM) and computer generated image (CGI) of DNA (deoxyribonucleic acid) molecules (helices) and red and white blood cells. Leukaemia is cancer of the white blood cells. Leukemias are caused by mutations in the DNA of blood cells. These genetic mutations change the way the blood cells reproduce and can also prevent them from funct

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  • 679-09184327

    Leukaemia, conceptual composite image. Scanning electron microscopy (SEM) and computer generated image (CGI) of DNA (deoxyribonucleic acid) molecules (helices) and red and white blood cells. Leukaemia is cancer of the white blood cells. Leukemias are caused by mutations in the DNA of blood cells. These genetic mutations change the way the blood cells reproduce and can also prevent them from funct

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  • 679-09160474

    Combination computer generated image (CGI) with scanning electron microscopy (SEM) showing DNA molecules and a T lymphocyte. The molecules of DNA (deoxyribonucleic acid) consists of a long double helix of phosphates and sugars, connected by pairs of nucleotide bases. These nucleotide base pairs form the rungs of the spiral ladder seen here. The sequence of these base pairs form the genetic code th

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  • 679-09164169

    Blood disorders, conceptual composite image. Scanning electron microscopy (SEM) and computer generated image (CGI) of DNA (deoxyribonucleic acid) molecules (helices) and red and white blood cells. There are a number of blood disorders that are caused by genetic mutations and can therefore be passed from parent to child. Such disorders include haemophilia, sickle cell anaemia and thalassaemia. Bloo

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  • 679-09164168

    Blood disorders, conceptual composite image. Scanning electron microscopy (SEM) and computer generated image (CGI) of DNA (deoxyribonucleic acid) molecules (helices) and red and white blood cells. There are a number of blood disorders that are caused by genetic mutations and can therefore be passed from parent to child. Such disorders include haemophilia, sickle cell anaemia and thalassaemia. Bloo

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  • 679-09164167

    Blood disorders, conceptual composite image. Scanning electron microscopy (SEM) and computer generated image (CGI) of DNA (deoxyribonucleic acid) molecules (helices) and red and white blood cells. There are a number of blood disorders that are caused by genetic mutations and can therefore be passed from parent to child. Such disorders include haemophilia, sickle cell anaemia and thalassaemia. Bloo

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  • 679-09040177

    Telomere shortening with each round of cell division, conceptual illustration. Telomeres, the caps on chromosomes, shorten with age and during different pathological processes.

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  • 679-09040176

    Telomere shortening with each round of cell division, conceptual illustration. Telomeres, the caps on chromosomes, shorten with age and during different pathological processes.

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  • 679-04250812

    DNA molecule, computer artwork

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  • 679-06672912

    DNA molecule, computer artwork.

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  • 679-06672911

    DNA molecule, computer artwork.

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  • 679-06672910

    DNA molecule, computer artwork.

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  • 679-06672909

    DNA molecule, computer artwork.

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  • 679-06672908

    DNA molecule, computer artwork.

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  • 679-06672907

    DNA molecule, computer artwork.

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  • 679-06672906

    DNA molecule, computer artwork.

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  • 679-06672905

    DNA molecule, computer artwork.

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  • 679-06671863

    DNA molecule, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. DNA contains sections called genes, which encode the body's genetic information.

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  • 679-06671862

    DNA molecule, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. DNA contains sections called genes, which encode the body's genetic information.

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  • 679-06671861

    DNA molecule, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. DNA contains sections called genes, which encode the body's genetic information.

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  • 679-06671860

    DNA molecule, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. DNA contains sections called genes, which encode the body's genetic information. The background depicts a space star nebula.

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  • 679-06671859

    DNA molecule, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. DNA contains sections called genes, which encode the body's genetic information. The background depicts a space star nebula.

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  • 679-06671858

    DNA molecule, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. DNA contains sections called genes, which encode the body's genetic information. The background depicts a space star nebula.

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  • 679-06671857

    DNA molecule, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. DNA contains sections called genes, which encode the body's genetic information. The background depicts a space star nebula.

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  • 679-06671856

    DNA molecule, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. DNA contains sections called genes, which encode the body's genetic information

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  • 679-06671855

    DNA molecule, computer artwork. DNA (deoxyribonucleic acid) is composed of two strands twisted into a double helix. DNA contains sections called genes, which encode the body's genetic information

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  • 679-06674308

    DNA molecule, computer artwork.

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  • 679-06674307

    DNA molecule, computer artwork.

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  • 679-06674306

    DNA molecule, computer artwork.

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