PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2654474-9 1989 The findings are compatible with the notion that EC-SOD C in the vasculature forms an equilibrium between plasma and heparan sulfate in the glycocalyx of the endothelium. Heparitin Sulfate 117-132 superoxide dismutase 3 Homo sapiens 49-55 2654474-10 1989 Furthermore, tissue EC-SOD is probably distributed between heparan sulfate on the surface of most cell types in the organs and in the interstitial matrix. Heparitin Sulfate 59-74 superoxide dismutase 3 Homo sapiens 20-26