Nature of the intestinal slow-wave frequency gradient.
D000818:Animals; D002415:Cats; D004285:Dogs; D004594:Electrophysiology; D005769:Gastrointestinal Motility; D000882:Haplorhini; D066298:In Vitro Techniques; D007421:Intestine, Small / Q000502:physiology*; D008722:Methods; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000502:physiology*