title: Structure and immunological function of lymphomyeloid organs in the bullfrog, Rana catesbeiana.
mesh_terms: D000818:Animals; D000921:Antibody-Producing Cells; D001001:Anura; D001853:Bone Marrow / Q000276:immunology* / Q000648:ultrastructure; D001854:Bone Marrow Cells; D005260:Female; D008297:Male; D008940:Mitotic Index; D011892:Rana catesbeiana / Q000276:immunology*; D013154:Spleen / Q000276:immunology* / Q000648:ultrastructure; D013950:Thymus Gland / Q000276:immunology* / Q000648:ultrastructure