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1. Immunohistochemical expression of CD8, CTLA4, and PD-L1 in NSCLC of smokers versus non smokers and its effect on prognosis

- Rasha. O. Elsaka

- Suzan. M. Helal

- Ahmed. M. Abdelhady

- Nourhan. M. Kolaib

- Manal. A. Soliman