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Epidermal Growth Factor （EGF） is a protein that plays a crucial role in cell growth, proliferation, and differentiation. EGF is a potent mitogen that stimulates the growth and survival of various cell types, including epithelial cells. It is involved in processes such as wound healing, tissue regeneration, and development. Porcine EGF refers to the version of this growth factor derived from porcine （pig） sources. Porcine EGF shares high sequence homology with human EGF and exhibits similar biological activities in promoting cell growth and tissue repair.