PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23709238-9 2013 CONCLUSION: Ductal epithelial cells are non-professional histamine-producing cells able to release histamine via OCTs at the resting state up to ~100 nM, enough to excite H3R/H4R(+) epithelial cells, but not H1R, which requires burst release from mast cells. maxacalcitol 113-117 histamine receptor H3 Homo sapiens 171-174