855 resultados para scanning electron micrograph

  • 649-07063286

    Pepper, SEM

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  • 679-08026647

    Diatom detail, SEM

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  • 649-07063292

    3D SEM image, 8 degree tilt

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  • 679-08008801

    Radiolarian. Coloured scanning electron micrograph (SEM) of a radiolarian. Radiolarians are amoeboid protozoa that produce intricate mineral skeletons. They are found as zooplankton throughout the ocean, and their skeletal remains cover large portions of the ocean bottom as radiolarian ooze. Magnification: x2000 at 10 centimetres wide.

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  • 679-07962140

    March fly. Scanning electron micrograph (SEM) of a female march fly (family Bibionidae). A member of a family of stout insects in the fly order, Diptera, that are commonly seen around flowers during spring and early summer. The larvae feed on the roots of plants and on decaying vegetation and may occasionally become plant pests. March flies show sexual dimorphism or visual difference between the s

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  • 649-07063987

    Orange gerbera petal, SEM

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  • 679-07732494

    Radiolarian. Coloured scanning electron micrograph (SEM) of the shell of a radiolarian. Radiolaria are single-celled protozoans that are found in marine plankton. Magnification: x400 at 10 centimetres wide.

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  • 649-08562199

    High vacuum SEM image of plant lice face to face

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  • 679-04249985

    Hoverfly head, SEM

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  • 679-05992370

    Heart strings, coloured scanning electron micrograph (SEM). The heart strings, chordae tendineae, are cord-like tendons that connect the papillary muscles on the internal heart wall to the heart valves. Magnification: x90 when printed at 10 centimetres wide.

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  • 679-03681296

    Abutilon sp. pollen grain, coloured scanning electron micrograph (SEM). Magnification: x1000 when printed at 10 centimetres wide.

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  • 679-04250158

    Bluebottle fly head, SEM

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  • 679-05992378

    Ruptured venule. Coloured scanning electron micrograph (SEM) of a ruptured venule running through fatty tissue. Stacked red blood cells (rouleaux formation) and white blood cells are seen within the venule. Magnification: x1050 when printed at 10 centimetres wide.

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  • 679-05992372

    Cat flea. Coloured scanning electron micrograph (SEM) of the head of a cat flea (Ctenocephalides felis). Magnification: x130 when printed at 10 centimetres wide.

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  • 679-03681316

    Asparagus beetle, coloured scanning electron micrograph (SEM). The asparagus beetle (Crioceris asparagi) is a pest of asparagus crops (Asparagus officinalis) in Europe and the USA. The beetle feeds and lays its eggs upon the asparagus spears so destroying the crop. Magnification: x15 when printed at 10 centimetres tall.

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  • 679-08026644

    Diatom, SEM

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  • 679-07732488

    Acrospaera radiolarian. Coloured scanning electron micrograph (SEM) of the shell of an Acrospaera sp. radiolarian. Radiolaria are single-celled protozoans that are found in marine plankton. Magnification: x1000 at 10 centimetres wide.

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  • 679-08425079

    MRSA bacteria. Coloured scanning electron micrograph (SEM) of methicillin-resistant Staphylococcus aureus (MRSA) bacteria (round). MRSA is a Gram-positive, round (coccus) bacterium that is resistant to many commonly prescribed antibiotics. It is carried by around a third of the population without causing any symptoms. However, in vulnerable people, such as those that have recently had surgery, it

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  • 679-05797872

    Blood cells, SEM

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  • 679-05992374

    Inner ear hair cells. Coloured scanning electron micrograph (SEM) of sensory hair cells in the cochlea of the inner ear. The crescent-shaped arrangements of hairs across top are the stereocilia. Each crescent lies atop a single cell. Magnification: x1000 when printed at 10 centimetres wide.

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  • 679-04250176

    Diatom, SEM

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  • 679-03679602

    Skin cell. Coloured scanning electron micrograph (SEM) of a squamous cell on the surface of the skin. This is a flat, keratinised, dead cell. Squamous cells are continuously sloughed off and replaced with new cells from below. Magnification: x4000 when printed at 10 centimetres wide.

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  • 649-07063295

    3D SEM image of crystal, 8 degree tilt

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  • 679-03681315

    Asparagus beetle, coloured scanning electron micrograph (SEM). The asparagus beetle (Crioceris asparagi) is a pest of asparagus crops (Asparagus officinalis) in Europe and the USA. The beetle feeds and lays its eggs upon the asparagus spears so destroying the crop. Magnification: x15 when printed at 10 centimetres tall.

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  • 679-05992381

    Sucrose crystals, coloured scanning electron micrograph (SEM). Magnification: x1250 when printed at 10 centimetres wide.

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  • 679-04249982

    Bluebottle fly eye, SEM

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  • 649-07063293

    3D SEM image of chamomile pollen, 8 degree tilt

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  • 649-07063289

    Lemongrass cross section, SEM

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  • 679-05992380

    Sucrose crystals, coloured scanning electron micrograph (SEM). Magnification: x1250 when printed at 10 centimetres wide.

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  • 679-03681363

    Water bear. Coloured scanning electron micrograph (SEM) of a water bear (Macrobiotus sp.), or tardigrade. This tiny invertebrate lives in aquatic and semi-aquatic habitats such as lichen and damp moss. Magnification: x250 when printed at 10 centimetres wide.

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  • 679-05797866

    Activated platelet, SEM

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  • 679-05797884

    Pluripotent stem cell, SEM

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  • 679-03681297

    Abutilon sp. pollen grain, coloured scanning electron micrograph (SEM). Magnification: x1000 when printed at 10 centimetres wide.

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  • 679-03681313

    Amoeba shell. Coloured scanning electron micrograph (SEM) of a shell from a Euglypha sp. amoeba. Magnification: x1350 when printed at 10 centimetres wide.

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  • 679-05992376

    Dense connective tissue, coloured scanning electron micrograph (SEM). The main component of this tissue is collagen. Magnification: x1500 when printed at 10 centimetres wide.

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  • 649-08565237

    Bee SEM

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  • 679-05797881

    Lymphocyte white blood cell, SEM

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  • 679-06674246

    Dental plaque. Coloured scanning electron micrograph (SEM) of dental plaque. Plaque consists of a film of bacteria embedded in a glycoprotein matrix. The matrix is formed from bacterial secretions and saliva. Magnification: x10,000 when printed at 10 centimetres wide.

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  • 679-03681301

    Bougainvillea sp. pollen grains, coloured scanning electron micrograph (SEM). Magnification: x2000 when printed at 10 centimetres wide.

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  • 679-07764669

    Coloured scanning electron micrograph (SEM) of uric acid crystals. Magnified X 2000 at 10cm wide.

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  • 679-03681305

    Geranium sp. pollen grain, coloured scanning electron micrograph (SEM). Magnification: x650 when printed at 10 centimetres wide.

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  • 679-05992373

    Cat flea. Coloured scanning electron micrograph (SEM) of the head of a cat flea (Ctenocephalides felis). Magnification: x130 when printed at 10 centimetres wide.

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  • 679-08173223

    Coloured scanning electron micrograph (SEM) of breast cancer cells growing in culture. These are from the MCF-7 cell line. Magnification: x280 when printed at 10 centimetres wide.

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  • 679-03681332

    Licmorpha. Coloured scanning electron micrograph (SEM) of colonies of the freshwater diatom Licmorpha sp. Magnification: x500 when printed at 10 centimetres wide.

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  • 679-03298428

    Bone tissue. Coloured scanning electron micrograph (SEM) of cancellous (spongy) bone. This tissue, found in the interior of bones, is characterised by a honeycomb arrangement of trabeculae (columns) and spaces. This honeycomb structure provides support and strength to the bone. Magnification: x 15 when printed 10 centimetres wide.

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  • 679-04250167

    Diatom, SEM

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  • 679-02684407

    Hyaline cartilage. Coloured scanning electron micrograph (SEM) of a freeze-fractured section through hyaline cartilage, a semi-rigid connective tissue. Chondrocyte cells (pink) in the cartilage synthesize an extracellular matrix (brown) that keeps them separate from each other, in spaces known as lacunae.

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  • 679-05797865

    Cat flea, SEM

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  • 679-07732490

    Lychnocanoma radiolarian. Coloured scanning electron micrograph (SEM) of the shell of a Lychnocanoma sp. radiolarian. Radiolaria are single-celled protozoans that are found in marine plankton. Magnification: x200 at 10 centimetres wide.

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  • 679-02685109

    Moth proboscis. Coloured scanning electron micrograph (SEM) of the coiled proboscis of a moth (order Lepidoptera). The proboscis is an elongated part of the mouth, used for sucking up nectar and other liquids. Sensory taste sensilla (blue) occur at its tip. Magnification: x35 when printed at 10 centimetres wide.

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  • 679-03681051

    Primrose (Primula sp.) pollen grain, coloured scanning electron micrograph (SEM). Magnification: x2000 when printed at 10 centimetres wide.

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  • 679-03298448

    Copepod. Scanning electron micrograph (SEM) of a copepod (subclass Copepoda). This microscopic aquatic crustacean is found in waters around the world. Copepods may either be free living or parasitic on other organisms. They are the main constituent of zooplankton and therefore are very important as food organisms for fish, whales and other crustaceans. Copepods feed on other microscopic animals an

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  • 679-02685126

    Yeast cells. Coloured scanning electron micrograph (SEM) of cells of brewer's yeast (Saccharomyces cerevisiae). This fungus consists of single vegetative cells. Small daughter cells can be seen budding off from the larger cells. Once they have reached their full size, the daughter cells will be indistinguishable from the mother cells. S. cerevisiae ferments sugar, producing alcohol and carbon diox

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  • 679-03681330

    Rhabdonema. Coloured scanning electron micrograph (SEM) of a colony of the marine diatom Rhabdonema sp. Magnification: x500 when printed at 10 centimetres wide.

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  • 679-04250152

    Blood cells, SEM

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  • 679-03681357

    Freshwater sponge (Spngilla sp.), coloured scanning electron micrograph (SEM). Magnification: x4000 when printed at 10 centimetres wide.

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  • 679-05992379

    Ruptured venule. Coloured scanning electron micrograph (SEM) of a ruptured venule running through fatty tissue. Stacked red blood cells (rouleaux formation) and white blood cells are seen within the venule. Magnification: x1050 when printed at 10 centimetres wide.

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  • 679-05992371

    Heart strings, coloured scanning electron micrograph (SEM). The heart strings, chordae tendineae, are cord-like tendons that connect the papillary muscles on the internal heart wall to the heart valves. Magnification: x90 when printed at 10 centimetres wide.

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  • 679-05797883

    Pluripotent stem cell, SEM

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  • 679-03681298

    Bottlebrush (Callistemon sp.) pollen grain, coloured scanning electron micrograph (SEM). Magnification: x3000 when printed at 10 centimetres wide.

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  • 679-03681055

    Flowering currant (Ribes sanguineum) pollen grains, coloured scanning electron micrograph (SEM). Magnification: x2000 when printed at 10 centimetres wide.

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  • 679-03681311

    Phlox sp. pollen grain, coloured scanning electron micrograph (SEM). Magnification: x2000 when printed at 10 centimetres wide.

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  • 679-03681054

    Flowering currant (Ribes sanguineum) pollen grains, coloured scanning electron micrograph (SEM). Magnification: x2000 when printed at 10 centimetres wide.

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  • 679-02685102

    B-cell, coloured scanning electron micrograph (SEM). B-cells are a type of white blood cell involved in immune respone. They account for 10 per cent of the body's lymphocytes. On encountering a foreign antigen, such as a bacterial surface protein, the immature B-cell either divides into a number of plasma cells, which produce antibodies, or it matures into a memory cell. Memory cells remain in the

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  • 679-03681368

    Thyroid gland. Coloured scanning electron micrograph (SEM) of a fracture through the thyroid gland revealing several follicles (yellow). Between the follicles is connective tissue (pink). Magnification: x100 when printed at 10 centimetres wide.

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  • 679-03681328

    Rhabdonema. Coloured scanning electron micrograph (SEM) of a colony of the marine diatom Rhabdonema sp. Magnification: x500 when printed at 10 centimetres wide.

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  • 679-04250177

    Diatom, SEM

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  • 679-03681371

    Anther. Coloured scanning electron micrograph (SEM) of a wood anemone (Anemone nemerosa) anther (male reproductive part) covered in pollen. Magnification: x65 when printed at 10 centimetres wide.

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  • 679-03679565

    Dog hair, coloured scanning electron micrograph (SEM).In dogs several hairs emerge from a single follicle.The collagen of the dermis has been exposed by the fracture. Magnification: x200 when printed at 10 centimetres tall.

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  • 679-03298430

    Bellflower pollen. Coloured scanning electron micrograph (SEM) of pollen grains from a bellflower (Campanula sp.). Pollen grains are the male gametes (sex cells) of a plant. Magnification: x1000 when printed 10 centimetres wide.

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  • 679-02681798

    Sperm production. Coloured scanning electron micrograph (SEM) of sperm cells (spermatozoa) in the seminiferous tubules of the testis. This is the site of spermatogenesis (sperm production). Sperm tails are very pale pink, sperm heads are pale pink and Sertoli cells are dark pink. Connective tissue sheaths are brown. Magnification: x160 when printed at 10 centimetres wide.

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  • 679-03679593

    Escherichia coli bacteria (pink), coloured scanning electron micrograph (SEM). A few cocci bacteria (yellow) are also present. Magnification: x40,000 when printed at 10 centimetres wide.

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  • 679-04249986

    Hoverfly head, SEM

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  • 679-05797869

    Asparagus pollen grains, SEM

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  • 679-03681359

    Stick insect foot, coloured scanning electron micrograph (SEM). The large claws are used for climbing. The adhesive pad (between claws) is used to cling to smooth surfaces. Magnification: x80 when printed at 10 centimetres wide.

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  • 679-04250808

    E coli bacteria, SEM

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  • 679-02684414

    Three Prorocentrum dinoflagellates (brown), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans. This dinoflagellate produces okadaic acid, which is associated with diarrhoeic shellfish poisoning (DSP).

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  • 679-05797882

    Lymphocyte white blood cell, SEM

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  • 649-08180572

    Complexity of human sadness teardrop imaged in a scanning electron microscope

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  • 679-02681744

    Myelinated nerve fibres, coloured scanning electron micrograph (SEM). The myelin sheath is grey, the axoplasm pink and the endoneurium (connective tissue) yellow. Magnification: x650 when printed at 10 centimetres wide.

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  • 679-05992375

    Inner ear hair cells. Coloured scanning electron micrograph (SEM) of sensory hair cells in the cochlea of the inner ear. The crescent-shaped arrangements of hairs across top are the stereocilia. Each crescent lies atop a single cell. Magnification: x1000 when printed at 10 centimetres wide.

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  • 679-02684406

    Bone tissue. Coloured scanning electron micrograph (SEM) of cancellous (spongy) bone. This tissue, found in the interior of bones, is characterised by a honeycomb arrangement of trabeculae (columns) and spaces. This honeycomb structure provides support and strength to the bone.

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  • 679-04250804

    Evening primrose pollen. Coloured scanning electron micrograph (SEM) of evening primrose (Oenothera sp.) pollen, showing the characteristic threads secreted by the pollen grains to hold them together in packages and probably to aid in attachment to insect pollinators. Pollen grains are the male sex cells of a flowering plant.

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  • 679-02685091

    Fallopian tube. Coloured scanning electron micrograph (SEM) of the surface of a fallopian tube, showing non-ciliated (green) and ciliated (orange) cells. Microvilli (small protrusions) cover the surface of the secretory, non-ciliated cells. Magnification: x1200 when printed at 10 centimetres wide.

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  • 679-04250157

    Human blood cells, SEM

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  • 679-03298443

    Tomato leaf surface. Coloured scanning electron micrograph (SEM) of the surface of a tomato leaf (Lycopersicon esculentum). It is covered in hairs (trichomes) which serve a protective function for the plant and reduce evaporation from the leaf. Magnification: x200 when printed 10 centimetres wide.

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  • 679-04249981

    Bluebottle fly eye, SEM

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  • 679-02685099

    Chinese hibiscus pollen. Coloured scanning electron micrograph (SEM) of a pollen grain from a Chinese hibiscus (Hibiscus rosa-sinensis) flower. Pollen grains are the male gametes (sex cells) of a plant. They are microscopic, usually about 15 to 100 microns across, and just a pinch of pollen powder contains thousands and thousands of grains. Magnification: x800 when printed at 10 centimetres wide./

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  • 679-04250178

    Diatom, SEM

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  • 679-02685127

    Yeast cells. Coloured scanning electron micrograph (SEM) of cells of brewer's yeast (Saccharomyces cerevisiae). This fungus consists of single vegetative cells. Small daughter cells can be seen budding off from the larger cells. Once they have reached their full size, the daughter cells will be indistinguishable from the mother cells. S. cerevisiae ferments sugar, producing alcohol and carbon diox

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