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. 2016 Feb 16;7(11):13060–13068. doi: 10.18632/oncotarget.7421

Figure 1. Representative images of the different intensities of the IHC staining for CTLA-4 expression.

Figure 1

(A) Negative staining of CTLA-4 in NPC tumor and lymphocyte (200 ×); (B) Weak staining of CTLA-4 in NPC tumor and lymphocyte (200 ×); (C) Moderate staining of CTLA-4 in NPC tumor and lymphocyte (200 ×); (D) Strong staining of CTLA-4 in NPC tumor and lymphocyte (200 ×).