Recombinant human fibroblast growth factor-20 (rhFGF-20) Lot Number: 274-04-001 Amount Provided: 25 mg/vial Presentation: Lyophilized cake. Description: White cake. Colorless, clear liquid when reconstituted with 2.6 sterile water; may contain translucent particles. When reconstituted concentration is 10 mg/ml ± 1.5 mg/ml in 0.5 M Arginine; 0.05 M Monobasic Sodium Phosphate Monohydrate, USP; 0.01% Polysorbate 80, NF SDS-PAGE: Reduced – Major band at 23 KDa Potency: Cell growth bioassay – 60 – 140% relative to reference standard Purity (HPLC): >90% monodisperse peak Product Testing: Sterility (no growth) Endotoxin – gel clot (<15 EU/mg protein) pH 7.0 ± 0.5 Storage: 2-8°C Placebo: Placebo is identical in form and reconstitution properties except that no FGF-20 is in the reconstituted product. Reference: Alvarez, et al. Clin Cancer Res. 2003 Aug 15; 9 (9):3454-61. Preclinical characterization of CG53135 (FGF-20) in radiation and concomitant chemotherapy/radiation-induced oral mucositis CAUTION: FOR RESEARCH USE ONLY.  NOT FOR DRUG OR DIAGNOSTIC USE.  NOT FOR USE IN HUMANS. Address questions or comments to: Biological Resources Branch, NCI-Frederick, PO Box B, Building 1052, Frederick, MD 21702, muszynskik@mail.nih.gov NOTE: Recipients of bulk cytokines and monoclonal antibodies will be required to sign a Material Transfer Agreement which will be provided at the time of electronic submission of the order.  All international recipients must prepay for handling, packing materials and packaging fees.  All recipients are responsible for the cost of the courier (Fed Ex, DHL, etc.).