FOR A PDF DOCUMENT OF THIS INFORMATION, CLICK: http://content.lib.auburn.edu/cdm/singleitem/collection/vetmed1/id/1021 - This is a special stain to indicate the Beta cells (b). Alpha cells (a) are on the edge of the islets in most mammals. Secretory features are summarized in the following chart:
HORMONE: Glucagon
STIMULUS: Low blood glucose
ORIGIN: Alpha cell
ACTION: Activate liver phosphorylase, glycogen breakdown
HORMONE: Insulin
STIMULUS: High blood glucose
ORIGIN: Beta cell
ACTION: Increase uptake of glucose by fat, muscle cells
