Fig. 7. Body weight (a) and tumor volumes (b) of the mice with 4T1 tumors in different treatment groups with the same Ce6 concentration (PBS, HHSA@Ce6, HHSA@Ce6-DOX) within 14 days. (c) Relative tumor volume on the 14th day. (d) The photograph of tumors in different treatment groups on the 14th day. P values: ns P > 0.05, *P < 0.05, **P < 0.01 were calculated by SPSS with a t-test.