Fig. 4. (A) MTT reduction curve for Vero cells cultured in the presence of 10% FBS, 10% HPL, and 5% HPL and in SFM. Data are expressed as means of three independent experiments (P <0.05). (B) MTT reduction difference between cells cultivated in 10% and 5% HPL and SFM and those cultured in 10% FBS (P <0.05).

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