Figure 1. MiR-519d is down-regulated in breast cancer stem cells.

A. The relative expression levels of miR-519d were detected by qRT-PCR in MCF-10A, T-47D, MCF-7 and SKBR3 cells. *P<0.05 vs. MCF-10A cells. B. The breast cancer stem cell (BCSC) population was sorted as CD44⁺/CD24^−/low cells. The expression levels of miR-519d in T-47D, MCF-7 and SKBR3 BCSCs and the corresponding non-CSCs were detected by qRT-PCR analysis, *P<0.05.