Fig. 2.
BCL-6 expression in normal thymus.
(A) BCL-6 was expressed by 60% to 90% of thymocytes in the cortex. Less than 20% of the cells in the medulla were BCL-6+. (B) Double staining for BCL-6 and CD3 in thymus shows that most CD3+ cortical thymocytes (cytoplasmic, blue) express BCL-6 (nuclear, brown). BCL-6+ thymocytes also express CD1a, CD2, CD4, CD5, CD7, and CD8 (21 weeks gestational age). Original magnification × 200 (A), × 1000 (B).