PMID-sentid Pub_year Sent_text compound_name comp_offset prot_official_name organism prot_offset 19766177-9 2009 Quercetin was also shown to significantly inhibit the constitutive CYP3A4 activity, measured by the 6beta-(OH)-testosterone assay, and to impair its induction by 1,25-vitamin D(3). 6beta-(oh)-testosterone 100-123 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 67-73