aids
analysis
assistant
background
bacteria
biochemical analysis
biochemistry
biotechnology
blood
blue
chemical
chemistry
closeup
covid19
diagnostic
disease
dna
doctor
examine
female
glass
glass test tube
glove
gloves
hands
health
hiv
holding
hospital
lab
lab coat
laboratory
laboratory assistant
laboratory test tube
medical
microbiology
pandemic
profession
professional
protective
protective glove
red
research
result
sample
science
scientific
scientist
specialist
technology
test
test tube
tube
virus
white