bacilli
bacillus
bacteria
bacteria spirilla
bacterial cell structure
bacterial infection
bacteriology
capsule
cartoon
cell wall
cells
character
coccus
cute
cytoplasm
diplococci
dive
diving
emoticon
emotion
expression
fall
funny
glasses
happy
holiday
illustration
infecting humans
intestinal bacteria
lyme disease
mascot
microbe
microbiology
microorganism
nucleoid dna
plasma membrane
plunge
prokaryotic
sea
smile
spirilla
spirillum
spirochetes
submerge
swim
swimming
under water
virus
water