PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8473547-0 1993 Effect of concomitantly administered cimetidine or ranitidine on the pharmacokinetics of the 5-HT2-receptor antagonist ritanserin. Ranitidine 51-61 5-hydroxytryptamine receptor 2A Homo sapiens 93-107