Studies of the pH gradient and thickness of frog gastric mucus gel.
D000818:Animals; D001639:Bicarbonates / Q000378:metabolism; D005744:Gastric Acid / Q000378:metabolism; D005753:Gastric Mucosa / Q000187:drug effects; D006863:Hydrogen-Ion Concentration; D008839:Microelectrodes; D009093:Mucus / Q000187:drug effects / Q000502:physiology*; D011892:Rana catesbeiana
D001639:Bicarbonates