[On the 80th birthday of Academician Aleksandr Mikhaĭlovich Ugolev (1926-1991)].
D004063:Digestion / Q000502:physiology; D041981:Gastrointestinal Tract / Q000502:physiology; D049673:History, 20th Century; D007413:Intestinal Mucosa / Q000502:physiology; D010827:Physiology / Q000266:history; D014586:USSR