Fig. 7
From: A chitosan-based cascade-responsive drug delivery system for triple-negative breast cancer therapy
In vivo anticancer effects of free DOX and the NPs in MCF-7 xenograft nude mice. a Tumor volume changes; b digital photographs of the tumors after different treatments for 30 days; c body weight changes; d Kaplan–Meier survival curves (n = 8); e H&E, TUNEL and Ki67 staining assays performed on tumor tissues. Scale bars are 100 μm in the H&E assay and 50 μm in the TUNEL and Ki67 assays