PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7711097-5 1995 The ratio of progesterone receptor subunits A:B was determined to be 3.3:1 with both [3H]progestin azide 7 and [3H]-R 5020. Azides 99-104 progesterone receptor Homo sapiens 13-34