PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19288751-5 2009 The position of retinoic acid production and CYP26b1 expression that metabolizes RA to an inactive form regulates Stra8 expression. Radium 81-83 cytochrome P450 family 26 subfamily B member 1 Homo sapiens 45-52