Fig. 3.

Lymphocytes (white arrow) were heavily stained with anti-CD5 in this thymus sample from a 24-day-old animal. Most stained lymphocytes were in the medulla (M) with a few stained lymphocytes in the cortex (C). Anti-CD3 stained similarly. A black arrow indicates stained cells in the lymph node. Scale bar, 100 µm.