PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3894653-1 1985 Boar sperm acrosin isolated by affinity chromatography on p-(p"-aminophenoxypropoxy)benzamidine linked to Sepharose was tested for its proteolytic effect on the zona pellucida of freshly ovulated pig eggs. Sepharose 106-115 acrosin Sus scrofa 11-18