title: Morphology of organs of bacteria-free animals in postnatal ontogenesis.
mesh_terms: D000311:Adrenal Glands / Q000033:anatomy & histology; D000818:Animals; D001773:Blood Cells; D002432:Cecum / Q000033:anatomy & histology; D004064:Digestive System / Q000033:anatomy & histology*; D005856:Germ-Free Life; D006168:Guinea Pigs; D006410:Hematopoiesis; D007413:Intestinal Mucosa / Q000033:anatomy & histology / Q000166:cytology; D007422:Intestines / Q000033:anatomy & histology; D008099:Liver / Q000033:anatomy & histology; D008168:Lung / Q000033:anatomy & histology; D008198:Lymph Nodes / Q000033:anatomy & histology; D051379:Mice; D008928:Mitochondria; D012157:Mononuclear Phagocyte System / Q000033:anatomy & histology*; D009474:Neurons / Q000166:cytology; D011817:Rabbits; D051381:Rats; D013154:Spleen / Q000033:anatomy & histology; D013950:Thymus Gland / Q000033:anatomy & histology