PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8713056-1 1996 Phosphatidylserine was exposed on the surface of human umbilical endothelial cells (ECV304) a few minutes after adding thrombin in vitro, as monitored by prothrombinase assays with and without annexin V. Phosphatidylserines 0-18 coagulation factor II, thrombin Homo sapiens 119-127