Used in Mallory-Heidenhain Azan-Gomori's Modification for Islet Cells for staining of alpha, beta and D-cells of islets of langerhans. (Bouin's Fixation). References are Clark, G, (ed): Staining Procedures 3rd Ed.; Baltimore: Williams & Wilkins Co., c. 1973, p. 171 and Gomori, G.: "Studies on the cells of the Pancreatic islets." Anat. Rec. 74:439 (1939)