Prognostic Value of Combined Analysis of CTLA-4 and PLR in Esophageal Squamous Cell Carcinoma (ESCC) Patients

Figure 1

Representative immunostaining for T-CTLA-4 and I-CTLA-4. Positive staining for CTLA-4 in tumor cells ((a) 200x magnification; (b) 400x magnification). Positive staining for CTLA-4 in interstitial lymphocytes ((c) 200x magnification; (d) 400x magnification).

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