Effect of the transient transfection of miRNA-10b and the miRNA-10b sponge on the proliferation and clone formation of the MDA-MB-231 and MCF-7 cells. (A) Proliferation of the MDA-MB-231 cells after transient transfection with miRNA-10b and the miRNA-10b sponge, *P<0.05 vs. miRNA-10b NC. (B) Proliferation of MCF-7 cells after transient transfection with miRNA-10b and the miRNA-10b sponge. (C) Clone formation of the MDA-MB-231 cells after transient transfection with miRNA-10b and the miRNA-10b sponge: a, the clone formation plate of the MOCK group; b, the clone formation plate of the miRNA-10b group; c, the clone formation plate of the miRNA-10b sponge group; d, the clone formation plate of the miRNA-10b NC group; e, histogram showing the clone formation in each group, *P<0.05 vs. miRNA-10b NC. (D) Clone formation of the MCF-7 cells after transient transfection with miRNA-10b and the miRNA-10b sponge; a, the clone formation plate of the MOCK group; b, the clone formation plate of the miRNA-10b group; c, the clone formation plate of the miRNA-10b sponge group; d, the clone formation plate of the miRNA-10b NC group; e, histogram showing the clone formation in each group.