EGF and oral mucositis: The results obtained under the conditions of this experimental study suggested that the glycine supplementation at 0.2 mg/g in hamster-induced oral mucositis during a 7-day period, favors the cellular healing process, increasing collagen synthesis, and accelerating the remodeling of collagen fibers, predominance of thick fibers, collagen type I. The group supplemented with glycine showed lower immunoexpression of epidermal growth factors (EGF) and platelet derivative (PDGF), in the final period of the experiment.