system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All are chemical carcinogens except
assistant
The correct answer is  Ans. a (Betacarotene). (Ref. Robbin Pathology, 6th ed., 307)CHEMICAL CARCINOGENSDirect actingProcarcinogensOthersa-propiolactoneBenzopyreneThorostatDimethyl sulfateDibenzanthraceneNitrosamineDiepoxybutane3-methyl cholanthrineVinyl chlorideAnticancerous drugsAromatic aminesNickel1-acetyl imidazoleAmidesChromiumDimethyl carbamyl chlorideAzo dyesInsecticides BenzidineFungicides a-naphthlaminePolychlorinated biphenyls Aflatoxin B1 Griseofulvin Betel nuts Safrole Cycasin