aeruginosa
attack
automotive
bacteria
bacteriemia
bacterium
biofilm
biology
cartoon
cells
character
cute
disease
emoticon
emotion
epidemic
expression
fever
fighting
funny
happy
illness
illustration
improvement
infection
macro
mascot
mechanic
mechanical
medical
medicine
micro
microbes
microbiology
microorganisms
microscope
microscopic
pathology
pseudomonas
repair
repairman
science
sick
sickness
smile
technician
tools
workman
wrench