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Doctor taking sample for DNA test from woman in clinic
Doctor taking sample for DNA test from man in clinic
Doctor taking sample for DNA test from man in clinic
Doctor taking sample for STD testing from man in clinic
Doctor taking sample for DNA test from man in clinic
Scientist with florence flask taking sample from river for analysis, closeup
Doctor taking sample for DNA test from man on light background, closeup
Take water samples for analysis. Selective focus.
Take water samples for analysis. Selective focus.
Take water samples for analysis. Selective focus.
Take water samples for analysis. Selective focus.
Take water samples for analysis. Selective focus.
Take water samples for analysis. Selective focus.
Take water samples for analysis. Selective focus.
Take water samples for analysis. Selective focus.
Doctor taking blood sample from patient's finger on white background, closeup
Doctor taking blood sample from patient's finger at table in clinic, closeup
Doctor taking test tube with urine sample for analysis, closeup
Scientist taking blood sample from Petri dish with pipette in laboratory, closeup. Virus research
Scientist taking blood sample from Petri dish with pipette in laboratory, closeup. Virus research
Doctor taking test tube with urine sample for analysis at table, closeup
Doctor taking test tube with urine sample for analysis at table, closeup
Doctor taking test tube with urine sample for analysis at table, closeup
Scientist taking test tube with blood sample from rack at table, closeup. Laboratory analysis