title: Pacemaker activity in the circular smooth muscle of frog stomach.
mesh_terms: D000200:Action Potentials; D000818:Animals; D005769:Gastrointestinal Motility; D008722:Methods; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000502:physiology*; D011312:Pressure; D011893:Rana esculenta / Q000502:physiology*; D013270:Stomach / Q000502:physiology*; D013997:Time Factors