Glucagon and the A cells.
D000818:Animals; D003920:Diabetes Mellitus / Q000188:drug therapy / Q000503:physiopathology*; D004285:Dogs; D005934:Glucagon / Q000276:immunology / Q000502:physiology*; D005947:Glucose / Q000378:metabolism; D006801:Humans; D007328:Insulin / Q000502:physiology; D007515:Islets of Langerhans / Q000166:cytology / Q000276:immunology / Q000502:physiology* / Q000503:physiopathology; D051381:Rats; D013004:Somatostatin / Q000627:therapeutic use; D013270:Stomach / Q000032:analysis
D007328:Insulin; D013004:Somatostatin; D005934:Glucagon; D005947:Glucose