PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2711904-4 1989 The authors report their experience with 150 cases of discectomies performed with interbody grafts using a copolymer (Biocompatible Orthopedic Polymer or BOP). copolymer 107-116 BOP Homo sapiens 154-157