PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8449227-4 1993 Subnanomolar concentrations of methysergide, ritanserin and spiperone, but not ICS 205-930, attenuated the 5-HT enhancement, compatible with 5-HT2, but not 5-HT1 or 5-HT3 receptor subtype involvement. Spiperone 60-69 5-hydroxytryptamine receptor 3A Rattus norvegicus 165-179