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    Pipette placing sample into test tube during experiment in laboratory. — Stock Photo
    Pipette placing sample into test tube during experiment in laboratory.
    Molecular structure illustrating pure research. — Stock Photo
    Molecular structure illustrating pure research.
    Molecular model of snake venom toxin convulxin from tropical rattlesnake. — Stock Photo
    Molecular model of snake venom toxin convulxin from tropical rattlesnake.
    Scientist closing lid of vial while laboratory testing. — Stock Photo
    Scientist closing lid of vial while laboratory testing.
    Morphine binding to opioid receptors, digital illustration. — Stock Photo
    Morphine binding to opioid receptors, digital illustration.
    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.
    Female scientist holding multi-well plate with growth medium. — Stock Photo
    Female scientist holding multi-well plate with growth medium.
    Enkephalin binding to opioid receptor, digital illustration. — Stock Photo
    Enkephalin binding to opioid receptor, digital illustration.
    Urine sample with test strip showing results. — Stock Photo
    Urine sample with test strip showing results.
    Scientist pipetting samples into test tubes in laboratory. — Stock Photo
    Scientist pipetting samples into test tubes in laboratory.
    Caspase-9 enzyme complexed with inhibitor, molecular model. — Stock Photo
    Caspase-9 enzyme complexed with inhibitor, molecular model.
    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.
    Scientist viewing results of genetic test on digital tablet. — Stock Photo
    Scientist viewing results of genetic test on digital tablet.
    Scientist pipetting samples into test tubes in laboratory. — Stock Photo
    Scientist pipetting samples into test tubes in laboratory.
    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.
    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.
    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.
    Male laboratory assistant using mini centrifuge. — Stock Photo
    Male laboratory assistant using mini centrifuge.
    Close-up of hand in glove using equipment in laboratory. — Stock Photo
    Close-up of hand in glove using equipment in laboratory.
    Urine sample in tube on surgical tray. — Stock Photo
    Urine sample in tube on surgical tray.
    Male laboratory assistant using equipment. — Stock Photo
    Male laboratory assistant using equipment.
    Female laboratory assistant holding chemical flask. — Stock Photo
    Female laboratory assistant holding chemical flask.
    Male laboratory assistant holding chemical flasks. — Stock Photo
    Male laboratory assistant holding chemical flasks.
    Male doctors walking in corridor. — Stock Photo
    Male doctors walking in corridor.
    Female scientist using computer. — Stock Photo
    Female scientist using computer.
    Female scientist working in laboratory. — Stock Photo
    Female scientist working in laboratory.
    Male laboratory assistant holding chemical flask. — Stock Photo
    Male laboratory assistant holding chemical flask.
    Scientists using computer and microscope in laboratory. — Stock Photo
    Scientists using computer and microscope in laboratory.
    Male scientist in protective clothing working in laboratory. — Stock Photo
    Male scientist in protective clothing working in laboratory.
    Female laboratory assistant looking in camera. — Stock Photo
    Female laboratory assistant looking in camera.
    Laboratory assistants looking at chemical flask. — Stock Photo
    Laboratory assistants looking at chemical flask.
    Scientists working in laboratory with microscope and computer. — Stock Photo
    Scientists working in laboratory with microscope and computer.
    Female laboratory assistant in safety goggles standing with arms crossed. — Stock Photo
    Female laboratory assistant in safety goggles standing with arms crossed.
    Female lab assistant using pipette, close-up. — Stock Photo
    Female lab assistant using pipette, close-up.
    Male scientists in surgical caps using microscope. — Stock Photo
    Male scientists in surgical caps using microscope.
    Male scientist in protective clothing working in laboratory. — Stock Photo
    Male scientist in protective clothing working in laboratory.
    Male laboratory assistant using pipette. — Stock Photo
    Male laboratory assistant using pipette.
    Surgeons in protective clothing in discussion. — Stock Photo
    Surgeons in protective clothing in discussion.