Keywords: β-کازامورفین; BCM; β-casomorphin; bBCM7; bovine form of BCM7; bBCM9; bovine form of BCM9; hBCM7; human form of BCM7; bFGF; basic fibroblast growth factor; BrdU; bromodeoxyuridine; CYS; cysteine; CYS2; cystine; dpp; days postplating; EGF; epidermal growth factor; GSH;