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The apoptosis and necrosis of MCF-7 cells after being co-cultured with different groups for 24 h with or without 808 nm (1 W/cm2) NIR. (A) Cu39S28 (B) Cu39S28-FA; (C) Control; (D) Cu39S28+NIR; (E) Cu39S28-FA+NIR; (F) NIR; (H) Cu39S28/DOX+NIR; (I) Cu39S28-FA/DOX+NIR; (J) DOX. The concentration of DOX in all groups is 25 μg/mL.
