PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10087024-0 1999 Precontraction with elevated concentrations of extracellular potassium enables both 5-HT1B and 5-HT2A "silent" receptors in rabbit ear artery. Potassium 61-70 5-hydroxytryptamine receptor 1B Oryctolagus cuniculus 84-90