Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12906-018-2204-y/MediaObjects/12906_2018_2204_Fig2_HTML.gif)
AC block the proliferation of breast cancer cell lines. MCF-7 cells (a) or tamoxifen resistant MCF-7 cells (MCF-7 tam-R cells) (b) were measured by XTT assay after indicated hours of culturing in the presence of indicated compounds. All the results are representative of at least three independent experiments. (Error bars = mean ± S.E.M. Asterisks (*) mark samples significantly different from blank group with p < 0.05)