bacteria
beware
biohazard
biologic
biological
biology
biosafety
caution
chemical
chemistry
control
danger
dangerous
distance
examination
female
harmful
hazard
hazardous
healthcare
hot
human
illustration
infectious
job
lab
laboratory
laser
measure
no contact
nuclear
patient
person
precaution
protection
radiation
safe
safety
sick
study
substances
suit
temperature
thermometer
virus
warn
woman
work
worker