WASF3 and breast cancer: WAVE3 had different expression levels in different drug-resistant breast cancer cells: the expression of WAVE3 was higher in the drug-resistant MDA-MB-231/Adr and MDA-MB-231/Taxol cells than in the nondrug-resistant MDA-MB-231 cells, and it was higher in the drug-resistant MCF-7/Adr and MCF-7/Taxol cells than in the nondrug-resistant MCF-7 cells.