PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6362632-7 1984 Type IV procollagen, fibronectin, and thrombospondin were identified as labeled proteins secreted by cultures of adult endothelium that had been incubated with 3H-proline and 3H-glycine. 3h-proline 160-170 fibronectin 1 Homo sapiens 21-32