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Effects of photodynamic hyperthermal therapy (PHT) on the number of terminal deoxynucleotidyltransferase-mediated dUTP nick end labeling (TUNEL)-positive cells in the tumor tissue. The numbers of TUNEL-positive cells were calculated. The data are presented as the mean ± SE of each group. Statistical significance was determined according to the Tukey-Kramer test. **P<0.01 ICG, indocyanine green.
