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    Female scientist holding blood sample by microscope in laboratory. — Stock Photo
    Female scientist holding blood sample by microscope in laboratory.
    Enkephalin binding to opioid receptor, digital illustration. — Stock Photo
    Enkephalin binding to opioid receptor, digital illustration.
    Scientist holding petri dish with biohazard warning in microbiology lab. — Stock Photo
    Scientist holding petri dish with biohazard warning in microbiology lab.
    Scientist holding petri dish with biohazard warning in microbiology lab. — Stock Photo
    Scientist holding petri dish with biohazard warning in microbiology lab.
    Female chemist using equipment in pharmaceutical laboratory. — Stock Photo
    Female chemist using equipment in pharmaceutical laboratory.
    Urine sample with test strip showing results. — Stock Photo
    Urine sample with test strip showing results.
    Chemist in protective glasses holding sample in pharmaceutical laboratory. — Stock Photo
    Chemist in protective glasses holding sample in pharmaceutical laboratory.
    Scientist pipetting sample into vial in laboratory. — Stock Photo
    Scientist pipetting sample into vial in laboratory.
    Chemist hand picking samples stored in crimp neck vials in pharmaceutical laboratory. — Stock Photo
    Chemist hand picking samples stored in crimp neck vials in pharmaceutical laboratory.
    Close-up of person hand holding pill in tweezers for pharmaceutical research. — Stock Photo
    Close-up of person hand holding pill in tweezers for pharmaceutical research.
    Chemist holding vial in pharmaceutical laboratory. — Stock Photo
    Chemist holding vial in pharmaceutical laboratory.
    Medium tray with cells and DNA autoradiogram for scientific research. — Stock Photo
    Medium tray with cells and DNA autoradiogram for scientific research.
    Female scientist pipetting liquid into Eppendorf tubes. — Stock Photo
    Female scientist pipetting liquid into Eppendorf tubes.
    Close-up of scientist pipetting liquid into multiwell tray. — Stock Photo
    Close-up of scientist pipetting liquid into multiwell tray.
    Female scientist holding blood sample by microscope in laboratory. — Stock Photo
    Female scientist holding blood sample by microscope in laboratory.
    Petri dishes for DNA sequencing, close-up. — Stock Photo
    Petri dishes for DNA sequencing, close-up.
    Medium tray with cells and DNA autoradiogram for scientific research. — Stock Photo
    Medium tray with cells and DNA autoradiogram for scientific research.
    Scientist pipetting samples into test tubes in laboratory. — Stock Photo
    Scientist pipetting samples into test tubes in laboratory.
    Medical testing microscopes and equipment in laboratory. — Stock Photo
    Medical testing microscopes and equipment in laboratory.
    Scientist gloved hands holding micro-petri dishes. — Stock Photo
    Scientist gloved hands holding micro-petri dishes.
    Female scientist pipetting liquid into Eppendorf tubes. — Stock Photo
    Female scientist pipetting liquid into Eppendorf tubes.
    Caspase-9 enzyme complexed with inhibitor, molecular model. — Stock Photo
    Caspase-9 enzyme complexed with inhibitor, molecular model.
    Multipipette and rack of vials for genetic research on white background. — Stock Photo
    Multipipette and rack of vials for genetic research on white background.
    Close-up of person holding petri dish for biological research. — Stock Photo
    Close-up of person holding petri dish for biological research.
    Scientist preparing chemical liquid in laboratory flask. — Stock Photo
    Scientist preparing chemical liquid in laboratory flask.
    Close-up of drop of red liquid pipetted into multi-well sample tray. — Stock Photo
    Close-up of drop of red liquid pipetted into multi-well sample tray.
    Scientist preparing chemical liquid in laboratory flask. — Stock Photo
    Scientist preparing chemical liquid in laboratory flask.
    Close-up of person hand holding petri dish with liquid for biological research. — Stock Photo
    Close-up of person hand holding petri dish with liquid for biological research.
    Scientist viewing results of genetic test on digital tablet. — Stock Photo
    Scientist viewing results of genetic test on digital tablet.
    Petri dishes and pipette, close-up. — Stock Photo
    Petri dishes and pipette, close-up.
    Chemist using nuclear magnetic resonance spectrometer in pharmaceutical laboratory. — Stock Photo
    Chemist using nuclear magnetic resonance spectrometer in pharmaceutical laboratory.
    Scientist pipetting samples into test tubes in laboratory. — Stock Photo
    Scientist pipetting samples into test tubes in laboratory.
    Scientist closing lid of vial while laboratory testing. — Stock Photo
    Scientist closing lid of vial while laboratory testing.
    Scientist viewing results of genetic test on digital tablet. — Stock Photo
    Scientist viewing results of genetic test on digital tablet.
    Opioid receptors, digital illustration. — Stock Photo
    Opioid receptors, digital illustration.
    Close-up of hand in glove using multichannel pipette. — Stock Photo
    Close-up of hand in glove using multichannel pipette.
    Male scientist using microscope, close-up. — Stock Photo
    Male scientist using microscope, close-up.
    Scientist pipetting samples into test tubes in laboratory. — Stock Photo
    Scientist pipetting samples into test tubes in laboratory.
    Chemical flasks in laboratory. — Stock Photo
    Chemical flasks in laboratory.
    Male laboratory assistant using mini centrifuge. — Stock Photo
    Male laboratory assistant using mini centrifuge.
    Doctors walking at hospital corridor, rear view. — Stock Photo
    Doctors walking at hospital corridor, rear view.
    Hand holding multi well plate with samples with DNA results in background. — Stock Photo
    Hand holding multi well plate with samples with DNA results in background.
    Scientists in protective clothing working in laboratory. — Stock Photo
    Scientists in protective clothing working in laboratory.
    Female scientists working in laboratory. — Stock Photo
    Female scientists working in laboratory.
    Close-up view of laboratory pipette. — Stock Photo
    Close-up view of laboratory pipette.
    Scientist closing lid of vial while laboratory testing. — Stock Photo
    Scientist closing lid of vial while laboratory testing.
    Female laboratory assistant wearing safety goggles. — Stock Photo
    Female laboratory assistant wearing safety goggles.
    Male scientist in protective clothing working in laboratory. — Stock Photo
    Male scientist in protective clothing working in laboratory.
    Female laboratory assistant using tap. — Stock Photo
    Female laboratory assistant using tap.
    Close-up of hand in glove using equipment in laboratory. — Stock Photo
    Close-up of hand in glove using equipment in laboratory.
    Male scientist using microscope. — Stock Photo
    Male scientist using microscope.
    Female scientist working in laboratory with colleagues in background. — Stock Photo
    Female scientist working in laboratory with colleagues in background.
    Female laboratory assistant wearing safety goggles. — Stock Photo
    Female laboratory assistant wearing safety goggles.
    Male laboratory assistant wearing glasses. — Stock Photo
    Male laboratory assistant wearing glasses.
    Close-up of hand in glove adjusting microscope slide. — Stock Photo
    Close-up of hand in glove adjusting microscope slide.
    Male scientist using computer. — Stock Photo
    Male scientist using computer.
    Laboratory assistants looking at chemical flask with blue liquid. — Stock Photo
    Laboratory assistants looking at chemical flask with blue liquid.
    Female laboratory assistant using digital tablet. — Stock Photo
    Female laboratory assistant using digital tablet.
    Close-up view of tweezers holding dna autoradiogram. — Stock Photo
    Close-up view of tweezers holding dna autoradiogram.
    Male laboratory assistant using mini centrifuge. — Stock Photo
    Male laboratory assistant using mini centrifuge.