On spirality in the intestinal wall.
D000818:Animals; D055592:Biophysical Phenomena; D001703:Biophysics; D002415:Cats; D004285:Dogs; D006801:Humans; D007082:Ileum / Q000033:anatomy & histology; D066298:In Vitro Techniques; D007421:Intestine, Small / Q000033:anatomy & histology*; D007583:Jejunum / Q000033:anatomy & histology; D009130:Muscle, Smooth / Q000033:anatomy & histology*; D013552:Swine