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Histopathological characterization of patient primary tumors and corresponding xenografts. (A) Representative immunohistochemical staining for TTF1 and P40. (B) Representative hematoxylin and eosin staining and immunohistochemical staining for vimentin, Ki-67, and EGFR of LC-00507. (C) Immunohistochemical staining for PD-L1 of LC-00536 and LC-00781 (400×).
