产品描述： background: Epidermal growth factor (EGF) is an acid- and heat-stable 53 amino acid protein originally found in rodents and humans.

It has been shown to be a potent mitogen for a variety of cell types both in vivo and in vitro. EGF binds to the EGF receptor

on the surface of cells and mediates intrinsic phosphorylation of the receptor on tyrosine residues. It has been detected in

nearly all body fluids, such as urine (urogastrone), saliva, milk and platelet-rich plasma. EGF, TGF?and vaccinia virus growth

factor exhibit 30-40% amino acid homology. Several additional members of the EGF/TGF family have been described; these

include Cripto, Amphiregulin and the heparin-binding EGF-like growth factor. Amphiregulin and the heparin-binding EGF-like

growth factor both bind to the EGF receptor.