area
attention
bacteria
bio
biohazard
biologic
biological
biology
black
caution
chemical
danger
dangerous
design
environment
epidemic
experiment
forbidden
hazard
hazardous
icon
illustration
lab
laboratory
line
medical
medicine
protect
protection
research
risk
safety
science
scientific
security
sign
signal
stroke
substance
symbol
thin
toxic
ui
virus
warning
waste
yellow
zone