Background: Yanghe decoction (YHD) has been used in the treatment of breast cancer for hundreds of years in Asia. However, the underlying mechanisms are currently unknown. The present study aims to evaluate the efficacy of YHD on antitumor and immune system enhancement in a 4T1 mouse breast cancer model and to clarify the antitumor mechanisms of YHD in breast cancer. Materials and Methods: The YHD was orally administrated for 2 weeks after inoculation. Tumor tissues were then removed, weighed, and homogenized. Flow cytometry was used to detect the number of Myeloid-Derived Suppressor Cells (MD...
