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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.
    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.
    Hands of scientist in laboratory measuring pH of soil samples by electronic pH meter. — Stock Photo
    Hands of scientist in laboratory measuring pH of soil samples by electronic pH meter.
    Bacterial colonies on agar plate. — Stock Photo
    Bacterial colonies on agar plate.
    Female scientist in laboratory looking at glass flask with dissolved samples of soil. — Stock Photo
    Female scientist in laboratory looking at glass flask with dissolved samples of soil.
    Mature chemist conducting experiment in lab — Stock Photo
    Mature chemist conducting experiment in lab
    Young female medical worker using microscope at workplace on blurred background — Stock Photo
    Young female medical worker using microscope at workplace on blurred background
    Male scientist working at computer in laboratory — Stock Photo
    Male scientist working at computer in laboratory