environmental
background
bag
bio
biohazard
biological
blood
box
care
caution
chemical
container
danger
dangerous
death
dirty
disposal
equipment
garbage
glove
hazard
hazardous
health
health care
healthcare
hospital
hygiene
industry
laboratory
medical
medicals
medicine
needle
plastic
pollution
protection
red
risk
safety
sample
sanitation
sharp
skull
symbol
syringe
trash
warning
waste
white