“…Drug chemosensitivity have been investigated in the several models of breast cancer cell such as T47D, WiDr colon cancer cells, MCF-7, MCF-7/Dox and showed various cytotoxic effects (Febriansah, et al, 2014;Hermawan, et al, 2010;Putri, et al, 2016). This study explored the effect of doxorubicin on triple negative breast cancer cell, 4T1, that is highly metastasis in breast and HER2-overexpresed cell, MCF-7/HER2.…”