title: Histology of the induction phase of the primary immune response in lymph nodes of germfree mice.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000941:Antigens; D002645:Chickens; D004106:Dilatation; D004912:Erythrocytes; D005856:Germ-Free Life; D007962:Leukocytes / Q000166:cytology; D008198:Lymph Nodes / Q000098:blood supply / Q000166:cytology*; D008214:Lymphocytes / Q000166:cytology; D008297:Male; D008407:Mast Cells / Q000166:cytology; D051379:Mice; D008854:Microscopy, Electron; D013997:Time Factors
chemical_list: D000941:Antigens