Experiment K-002: Results of histological examination of inguinal lymph nodes, supplementary report

摘要

Lymph nodes of the vivarium control group showed only normal variations of structure. Both nodular and diffuse arrangement of the parenchyma are found, which is further reflected in the fibrous framework as seen in picrofuchsin preparations. Active germinal centers with pyronin positive cells are found in some of the nodes of three rats of this group. Mitoses are occasionally observed. Necrotic cells and debris within the centers are normal in amount. The sinuses contain the cells usually seen: lymphocytes, histiocytes, plasma cells, and some erythrocytes.