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    Close-up of laboratory technician holding tube with blood sample in gloved hand. — Stock Photo
    Close-up of laboratory technician holding tube with blood sample in gloved hand.
    Gloved hands of unrecognizable man checking equipment and preparing for work at workshop — Stock Photo
    Gloved hands of unrecognizable man checking equipment and preparing for work at workshop
    Close-up of electronic pipette in gloved hands. — Stock Photo
    Close-up of electronic pipette in gloved hands.
    Scientist holding grains of genetically modified wheat in gloved hands. — Stock Photo
    Scientist holding grains of genetically modified wheat in gloved hands.
    Close-up of scientist hand holding PCR multiwell plate. — Stock Photo
    Close-up of scientist hand holding PCR multiwell plate.
    Mature woman tending to pot of pansies. — Stock Photo
    Mature woman tending to pot of pansies.
    Scientist holding DNA sample in tube with autoradiograph on DNA gel. — Stock Photo
    Scientist holding DNA sample in tube with autoradiograph on DNA gel.