[Light and electron microscopic studies on the lymphnodules at the orifice of the auditory tube in germ free and monoinfected chickens].
D000818:Animals; D002645:Chickens; D005064:Eustachian Tube / Q000166:cytology; D005856:Germ-Free Life; D007239:Infections / Q000473:pathology*; D008198:Lymph Nodes / Q000166:cytology / Q000473:pathology*; D008214:Lymphocytes; D008722:Methods; D008854:Microscopy, Electron; D014066:Palatine Tonsil / Q000502:physiology*