substance
carcinogenic
carcinoid
carcinology
carcinoma
acetaldehyde
additive
contaminant
cytotoxin
ethene
ethyne
formaldehyde
larvacide
monoxide
neurotoxin
pcbs
pericarditis
pesticide
phosgene
psychoneurosis
resveratrol
sedative-hypnotic
submariners
toxin
trichloroethylene
trioxide