alert
attention
background
banner
beware
biohazard
bones
caution
chemical
chemistry
circle
danger
dangerous
dead
death
dots
hazard
hazardous
icon
illustration
industry
isolated
lab
label
laboratory
pictogram
poison
poisonous
protection
purple
radioactive
random
restricted
risk
safety
security
sign
skeleton
skull
sticker
stop
substance
symbol
toxic
triangle
virus
warning
white
zone
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