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Kaplan–Meier curve for overall survival (OS) (top) of patients for whom (A) a primary cell line, (B) a PDX, or (C) any type of model could be established from their respective tumor tissue and relapse-free survival (RFS, bottom) of patients for whom (D) a primary cell line, (E) a PDX or (F) any type of model (patient-derived tumor model, PDTM) could be established from their respective tumor tissue (positive line) or not (negative line).
