Recombinant human FGF-7 (HZ-1100) Stimulates dose-dependent proliferation of the 4MBr-5 Monkey epithelial cell line. Viable cell number was quantitatively assessed by PrestoBlue Cell Viability Reagent. 4MBr-5 ells were treated with increasing concentrations of recombinant human FGF-7 for 120 hours. The EC50 was determined using a 4- parameter non-linear regression model. The EC50 values range from 4-20 ng/mL.