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    Close up scientist in rubber gloves placing specimen in centrifuge — Stock Photo
    Close up scientist in rubber gloves placing specimen in centrifuge
    Scientist pipetting sample in microcentrifuge tube for chemical analysis. — Stock Photo
    Scientist pipetting sample in microcentrifuge tube for chemical analysis.
    Assortment of experimental drugs being tested in chemical laboratory. — Stock Photo
    Assortment of experimental drugs being tested in chemical laboratory.
    Female scientist in face mask examining specimen in laboratory — Stock Photo
    Female scientist in face mask examining specimen in laboratory
    Scientist hand holding micro-centrifuge tube containing biological sample. — Stock Photo
    Scientist hand holding micro-centrifuge tube containing biological sample.
    Variety of potential drugs in petri dish on DNA autoradiogram. — Stock Photo
    Variety of potential drugs in petri dish on DNA autoradiogram.
    Close-up view of researcher hand taking blood sample from rack of medical samples. — Stock Photo
    Close-up view of researcher hand taking blood sample from rack of medical samples.
    Medical sample tubes labelled with barcodes. — Stock Photo
    Medical sample tubes labelled with barcodes.