Fig. 1From: Carrier-free nanoparticles of camptothecin prodrug for chemo-photothermal therapy: the making, in vitro and in vivo testingA Size distribution of IR820-SS-CPT NPs. B Zeta potential of IR820-SS-CPT NPs. C TEM image of IR820-SS-CPT NPs. D Photographs of free IR820 and IR820-SS-CPT NPs after being stored at room temperatureBack to article page