Fig. 3
a The release profiles of Cur from CaCO3@Cur@QTX125 nanoparticles in PBS at a pH = 7.4 and NaAc at pH = 5.2. a The release profiles of Cur from CaCO3@Cur@ QTX125@HA nanoparticles in PBS at pH = 7.4 and NaAc at pH = 5.2. c Representative TEM images of CaCO3@Cur@QTX125@HA nanoparticles incubated in NaAc at a pH of 5.2 over different periods of time, scale bars represent 200 nm. d Time-dependent size changes of CaCO3@Cur@QTX125@HA in NaAc at a pH of 5.2 for different periods of time