Díaz de Rada O, Sesma M P, Vázquez J J
Gen Comp Endocrinol. 1987 Aug;67(2):189-93. doi: 10.1016/0016-6480(87)90147-x.
G cells of the frog antral mucosa are described both in deplasticized semithin sections treated with antigastrin/CCK COOH terminal serum and in subsequent thin sections observed under the electron microscope. G cells are quite abundant in the antral mucosa, located between mucosecretory cells in the lateral aspects of glands. They bear irregular, occasionally round granules, with a 190-nm mean diameter.
