Fig. 4From: Carrier-free nanoparticles of camptothecin prodrug for chemo-photothermal therapy: the making, in vitro and in vivo testingIn vitro cell survivals. Relative viability of 4T1 cells treated with various concentrations of CPT, free IR820, free IR820 + Laser, IR820-CC-CPT NPs, IR820-SS-CPT NPs, or IR820-SS-CPT NPs + Laser for 36 h (IR820-SS-CPT NPs: 660 nm, 1.0 W/cm2; IR820: 808 nm, 1.0 W/cm2; t = 5 min)Back to article page