aids
biology
bovine
bovine coronavirus
cartoon
cell
character
closed eye
contagion
corona
coronavirus
cute
disease
emoticon
emotion
expression
flu
funny
germ
happiness
happy
hiv
human
illustration
immune
jeer
mascot
medicine
microbiology
mocking
organic
organism
research
retrovirus
science
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smile
sneer
specimen
taunted
tongue
tongue out
tongued
vaccination
viral
virology
virus
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