male scientist comparing two samples of virus in test tubes wearing biohazard suit
Coronavirus test in laboratory. Covid 19. Arm in plastic gloves holding test tubes with test sample in laboratory.
CDC or biohazard lab tech looking at a test tube sample
CDC or biohazard tech adding blood sample to test tube
Doctor holding positive blood sample Covid 19, coronavirus or sars covid 19 test tube in hand at hospital laboratory.
Doctor holding positive blood sample Covid 19, coronavirus or sars covid 19 test tube in hand at hospital laboratory.
tech holding a biohazard sample
Coronavirus test in laboratory. Covid 19. Arm in plastic gloves holding test tubes with test sample in laboratory. Hand detail.
Coronavirus test in laboratory. Covid 19. Arm in plastic gloves holding test tubes with test sample in laboratory. Hand detail.
Two biologist in biohazard suits and masks sampling water from a stream or river pipetting a sample into a test tube for chemical analysis of pollutants
Two biologist in biohazard suits and masks sampling water from a stream or river pipetting a sample into a test tube for chemical analysis of pollutants
Two men in biohazard suits and masks sampling water from a stream or river pipetting a sample into a test tube for chemical analysis of pollutants