The lymphoreticular system: morphological organization.
D001402:B-Lymphocytes; D008198:Lymph Nodes / Q000033:anatomy & histology; D008208:Lymphatic System / Q000033:anatomy & histology*; D008854:Microscopy, Electron; D013154:Spleen / Q000033:anatomy & histology; D013601:T-Lymphocytes; D013897:Thoracic Duct / Q000033:anatomy & histology; D013950:Thymus Gland / Q000033:anatomy & histology