toxicologist

Sean B. Carrollの 'The Serengeti Rules' を読んでいます。血液中のコレステロールを下げる特効薬のもとになる物質「スタチン」を発見した遠藤氏が出てきました。
In just one month of treatment, the birds' cholesterol levels dropped by 50 percent! Endo's success in hens prompted tests in monkeys and dogs, where compactin caused 30-44 percent reductions in cholesterol. Given the close biological relationship between monkeys and humans, these results boded well for the drug's potential. Sankyo formed a Compctin Development Project team composed of Endo, pharmacologists, pathologists, chemists, and toxicologists to further develop the drug.

"toxicologist" はどんな科学者・研究者か分からないので辞書を見ます。辞書の説明は "toxicology" についてです。
・Oxford English Dictionary: The branch of science concerned with the nature, effects, and detection of poisons.: This book represents an important contribution to neurology, toxicology and pharmacology.

・Collins Dictionary: Toxicology is the study of poisons.: toxicologists attempt to identify and understand toxic hazards.

・Cambridge English Dictionary: the scientific study of the characteristics and effects of poisons: Toxicology analysis is thus mandatory in such cases and the expertise of physicians is essential.
そういえば、形容詞の "toxic" と名詞の "toxin" は知っていましたね。