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HE and IHC in H460 tumor sections. (A) HE staining of H460 tumor sections. (B) Immunohistochemical staining of CD4, CD8, and CD31 in lung cancer tissues. Expression of CD4, CD8, and CD31 in H460 tumor xenograft tissues following treatment with PBS, Tα1, and Tα1-RGDR. White arrows represent the positive cytoplasm of CD4, CD8, and CD31 staining (200× magnification). Brown staining indicates positive CD4, CD8, and CD31 expression, whereas blue staining indicates cell nuclei.
