The development of intracellular membranes concomitant with the appearance of HCl secretion in oxyntic cells of the metamorphosing bullfrog tadpole.
D000818:Animals; D001001:Anura; D004721:Endoplasmic Reticulum; D005750:Gastric Juice / Q000378:metabolism*; D005753:Gastric Mucosa / Q000166:cytology / Q000254:growth & development*; D006056:Golgi Apparatus; D008566:Membranes / Q000254:growth & development*; D008675:Metamorphosis, Biological; D008854:Microscopy, Electron