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Terminal deoxynucleotidyl transferase-mediated nick-end labeling (TUNEL) immunofluorescent staining of tumors in each group. Representative TUNEL immunofluorescent images (magnification: 40×) of normal saline(NS) (A); free Cur (B); and Cur–lpNPs (C) group; and mean apoptotic index in each group (D) (* p < 0.05).
