aids
ailment
amoeba
amoeboid
archaea
bacillus
bacteria
bacteriophage
biological
biology
cell
cell division
covid19
disease
divides
e coli
escherichia coli
flat
germ
hazard
helicobacter pylori
hiv
icon
infect
infectious
magnify glass
microbe
microorganism
petri dish
science
sickness
tuberculosis
virus