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    Close up of 96-well microtiter plate with crystal violet solution to examine toxicity

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    Laboratory technician preparing human chemistry sample for medical testing in laboratory

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    Female scientist holding paperwork in laser laboratory

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    Scientist preparing blood samples for clinical testing in laboratory

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    Female cell biologist holding a flask containing stem cells, cultivated in red growth medium, to investigate disease

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    Scientist viewing sample on glass slide through microscope for medical testing

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    Cell biologist holding a flask containing stem cells, cultivated in red growth medium, to investigate diseases

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    Scientist examining test tube

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    Close up of scientists hands selecting a blood sample for medical testing

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    Optician and patient in eye clinic

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    Female scientist about to view a human sample under a microscope

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    Hair sample collected from crime scene for genetic testing in laboratory

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    DNA sample being pipetted into petri dish with DNA gel in background

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    Close up of female scientist examining micro organisms in petri dish

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    Mid adult male technician checking quality of products in engineering plant

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    Close up of 96-well microtiter plate with crystal violet solution to examine toxicity

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    Technician testing urine sample

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    Eppendorf tubes in a row with petri dishes awaiting experiment in lab

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    Female scientists with clipboard in laboratory

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    Stem cell research. Female scientist examining cell cultures in multiwell tray

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    Pipette dropping a solution into a vial, used for storing liquid during chemical or biological research

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    Female scientist about to view a blood sample under a microscope

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    Scientist scrutinizing test tubes containing blue liquid in lab

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    Female worker using magnifying glass at quality check station for a factory producing flexible electronic circuit boards. Plant is located in the south of China, in Zhuhai, Guangdong province

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    Coffee roasters roasting and tasting coffee

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    Doctor preparing to view blood sample under microscope in laboratory for medical testing

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    Close up of pipette in test tube

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    Optician testing young girl in eye clinic

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    Scientist viewing test results on a digital tablet in lab

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    A blood sample being held with a row of human samples for analytical testing including blood, urine, chemistry, proteins, anticoagulants and HIV in lab

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    Women smelling perfume in drugstore

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    Female scientist monitoring plant samples in lab

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    Scientist examining test tube in lab

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    Male electrician checking power control panel in factory

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    Stem cell research, nuclear transfer of embryonic stem cells used in cloning for medical research

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    Oenologist mixing during sample testing in laboratory

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    Scientist viewing sample on a glass slide through microscope for medical testing

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    Young female scientist experimenting in laser laboratory

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    Two baby soothers in petri dishes illustrating boy and girl designer babies and genetic engineering

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    Scientist using computer in lab

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    A graduated pipette being inserted into test tube

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    DNA sample being pipetted into petri dish with DNA gel in background

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    Class of schoolchildren doing educational exam

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    Scientist viewing various human samples for testing in the laboratory

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    Male electrician looking down at circuit board in workshop

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    Farmer working in field, holding potatoes and looking at camera, Germany

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    Oenologists at work

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    Female scientist viewing various human samples for testing in the laboratory

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    Female scientist viewing cultures growing in petri dishes with a biohazard tape on in a microbiology lab

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    Engineer measuring manufactured component for accuracy and quality control

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    Scientists working together in lab

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    Scientist writing a sample report in the laboratory of water treatment plant

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    Woman Flirting With Doctor

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    Female scientist pipetting DNA samples for testing

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    Young businessman explaining document to colleagues in creative office

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    Young woman in face mask on gym exercise cycle in altitude centre

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    Male researcher using multi pipette in lab

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    Scientist scrutinizing test tubes in lab

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    Female scientist using pipette and volumetric flask in lab

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    Scientist viewing cell cultures growing in petri dishes in lab

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    Students examining plants with teacher

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    Biology student looking at petri dish

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    Writing letter

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