Wieczorek, Z., et al. "Proline-rich polypeptide from ovine colostrum: its effect on skin permeability and on the immune response." Immunology, 1979;36(4):875-881.

Sporn, et al. Polypeptide Transforming Growth Factors (TGF A & B) and Epithelial Growth Factor isolated from bovine colostrum used for wound healing in vivo. Science, 219, pp. 1329-31, 1983.

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