Table 5.

The tumor mass of MCF-7/ADR bearing nude mice and the inhibition efficiency after different treatments (Mean ± SD) (n = 6).

Group	Tumor mass (g)	Inhibition efficiency (%)
Saline	0.89 ± 0.15	–
VCR	0.83 ± 0.21	6.74
VCR/VRP	0.62 ± 0.19	30.34
VCR-PLGANPs + VRP-PLGANPs	0.47 ± 0.13 A	47.19
VCR-VRP-PLGANPs	0.32 ± 0.05 AA	64.04

^Ap < 0.05;

^AAp < 0.01, compared to saline control.