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Growth induction of casein and α-casein on proliferation of PC-3 cells. Cell survival was determined using 3-(4,5-Dimethyl-thiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. (A) Percentage of surviving cells versus control group under serum conditions for 2 to 3 days. (B) Percentage of surviving cells versus control group under serum-free conditions for 2 to 3 days. Data are presented as the mean value (n=36 in each cell). ap<0.05, bp<0.001 versus control responses.
