activator
agent
anatomy
animal
bacillus
bacteria
bacterial
bacterium
biology
campylobacter
causative
cell
cocci
colony
contaminated
cytology
disinfection
division
euglena
exciter
genetic
germ
green
illness
illustrations
infected
infection
infectious
intestinal
intestine
medical
medicine
micro
microbiology
microscopic
organism
pathogen
pathogenic
protozoa
rectal
salmonellosis
sanitation
scientific
set
shigella
shigellosis
spirilla
structure
vibrio