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. Author manuscript; available in PMC: 2011 Feb 1.
Published in final edited form as: Am J Surg Pathol. 2010 Feb;34(2):178. doi: 10.1097/PAS.0b013e3181cc7e79

Figure 3. PD-1 staining in bone marrow biopsies.

Figure 3

(A,B) Reactive lymphoid aggregate with germinal center. PD-1 (right) stains scattered small GC-T-cells in the area of the germinal center (H&E, left, 100x & PD-1, right, 200x). (C,D) Bone marrow involvement by AITL. The lymphoid aggregate contains a mixture of eosinophils and branching vessels (H&E, left, 200x). PD-1 (right) is strongly positive in the large, atypical lymphoma cells (right, 400x).