Islet-cells and insulin.
D001681:Biological Assay; D050260:Carbohydrate Metabolism; D003920:Diabetes Mellitus / Q000378:metabolism; D003922:Diabetes Mellitus, Type 1 / Q000378:metabolism; D005934:Glucagon / Q000502:physiology*; D006801:Humans; D007118:Immunoassay; D007328:Insulin / Q000502:physiology*; D007515:Islets of Langerhans / Q000502:physiology*
D007328:Insulin; D005934:Glucagon