PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 857857-3 1977 Dose-response curves for serum ESA show highly significant parallelism with those obtained from sheep plasma erythropoietin and the International Reference Preparation of human urinary erythropoietin. esa 31-34 erythropoietin Ovis aries 109-123