D1 cell in search of a hormone.
D000818:Animals; D002415:Cats; D004285:Dogs; D004386:Duodenum / Q000166:cytology; D006801:Humans; D007413:Intestinal Mucosa / Q000166:cytology*; D010179:Pancreas / Q000166:cytology*; D010187:Pancreatic Hormones / Q000378:metabolism*; D010455:Peptides / Q000378:metabolism; D013270:Stomach / Q000166:cytology
D010187:Pancreatic Hormones; D010455:Peptides