Whatever happened to beta carotene?
D000970:Antineoplastic Agents / Q000008:administration & dosage*; D002338:Carotenoids / Q000008:administration & dosage*; D006801:Humans; D009369:Neoplasms / Q000517:prevention & control*; D019207:beta Carotene
D000970:Antineoplastic Agents; D019207:beta Carotene; D002338:Carotenoids