PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23924722-3 2013 Here, PEDF was purified from human plasma by use of a dermatan sulfate affinity column, and then hydroxyapatite, gel filtration and ion exchange columns. Dermatan Sulfate 54-70 serpin family F member 1 Homo sapiens 6-10