analyzing
bacterium
biology
biotechnology
caucasian ethnicity
chemistry
closeup
coronavirus
danger
discovery
disease
dna
equipment
examining
expertise
healthcare and medicine
illness
infection
laboratory
looking
medical exam
medical sample
medicine
medicine and science
microbiology
microscope
occupation
people
protective eyewear
protective glove
protective mask workwear
protective workwear
research
science
scientific experiment
scientist
solution
technician
technology
toxic
toxic substance
vaccine
women
working