Fig. 4.
Distortion of thymic, splenic, and lymph node architecture by anti-CD45 treatment.
Samples of thymus, spleen, and lymph node collected on days 1 and 30 from untreated mice and from mice treated with anti-CD45 (1 μg/g body weight) were stained with antibodies against CD5 T cells (in the thymus and lymph nodes) and against B220 B cells (in the spleen). The marker-positive cells were brown diaminobenzidine [DAB] against the blue nuclear stain hematoxylin. Severe distortion of normal thymic, splenic, and lymph node histology, first seen on day 1, persisted through day 30 (magnification × 10).