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Effect of different concentrations of penicillin/streptomycin on the viability (% of control, untreated cells) of (A) ACHN and (B) Caki-1 cells cultured in 2D (RPMI/FBS) or 3D (StemXvivo) media as determined by Alamar Blue reduction. *P<0.05, 2D vs. 3D; using Mann-Whitney U test; n=3 wells. 5X and 10X, 5 and 10 times more than used in standard culture.
