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Lower doses of curcumin induce the expression level of RARβ and RARγ in TNBC cell lines. (A and B) MDA-MB-231 and (C and D) MDA-MB-468 cells were treated with 5 or 10 µM curcumin for 24 h (DMSO was used for the control) prior to cell lysis. Cell lysates were resolved with SDS-PAGE and immuno-blotted with antibodies recognizing RARβ and RARγ. GAPDH was used as a loading control. RAR, retinoic acid receptor; TNBC, triple-negative breast cancer.
