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Betaine represses cell growth of human breast cancer. (A) Time curve, the ethanol (50 mM) and betaine (40 mM) were added in the medium, and the total cell numbers were counted from the first day to the sixth day. (B) The cells were treated with or without ethanol and different doses of betaine. The total cell numbers were counted after 6 days. * P<0.05 vs control (Ethanol=0, Betaine=0).
