Figure 1. RY10-4 inhibits the proliferation of breast cancer cells.

Four breast cancer cell lines (MDA-MB-231, MCF-7, SKBR3, BT474) were treated with 0.1, 0.5, and 1.0 μM RY10-4 for 24 h. (A) Monolayer growth rates of cells were determined by the methylene blue assay. (B) Monolayer growth rates of cells were determined by the MTT assay. Data represent mean ± SD, *P < 0.05, **P < 0.01, ***P < 0.001, versus vehicle control.