toxicology testing
toxicity test that is conducted to determine the degree to which a substance can damage a living organism
maximum tolerated dose
highest dose of an agent given during a chronic study that will not reduce longevity, from effects other than carcinogenicity
no observable adverse effect level
denotes the level of exposure of an organism
median lethal dose
a measure of the lethal dose of a toxin, radiation, or pathogen required to kill half of a tested population