Thermo Scientific HyClone Human Mesenchymal Stem Cell Screened Fetal Bovine Serum (FBS), U.S. Origin is prescreened and ready to use.Ensure optimum performance when culturing undifferentiated human mesenchymal stem cells (hMSC) with HyClone Human Mesenchymal Stem Cell Screened FBS. The selected lot must demonstrate equal or better doubling times when compared to the control lot.