ameba
amoeba
axenic
bacillus
bacteria
bacterium
biology
bloodsucker
cell
collage
collection
combination
combined
composition
currency
deadbeat
design element
dollar
figure
fillip
flat
germ
glyph
goad
group
icons
idler
illustration
infection
infectious
items
microbe
mosaic
object
organized
parasite
pathogen
pattern
pest
pictogram
pictograph
provocative
shape
spore
stirrer
sucker
symbol
virus