A pH-Sensitive, Biobased Calcium Carbonate Aragonite Nanocrystal as a Novel Anticancer Delivery System

Figure 6

Modified neutral red/trypan blue exclusion assay. MDA MB231 cells after 24, 48, and 72 h of exposure to free DOX and CaCO₃/DOX nanocrystals.

(a)  

(b)

(c)