PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7521878-7 1994 Peptide:N-glycosidase F (PNGaseF) treatment removed at least two of the three possible N-linked oligosaccharides from PSGL-1. n-linked oligosaccharides 87-112 selectin P ligand Homo sapiens 118-124