The structure of different organs of lymphopoesis in sterile animals.
D000302:Adrenal Cortex / Q000033:anatomy & histology; D000818:Animals; D005856:Germ-Free Life; D008198:Lymph Nodes / Q000033:anatomy & histology; D008221:Lymphoid Tissue / Q000033:anatomy & histology*; D051381:Rats; D013154:Spleen / Q000033:anatomy & histology