PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6292686-2 1982 The triarylmethane dye, gentian violet, is shown to undergo a one-electron reduction by the cytochrome P-450 monooxygenase system to produce a carbon-centered free radical as demonstrated by direct electron spin resonance techniques. radical 164-171 cytochrome P450 family 20 subfamily A member 1 Homo sapiens 92-122