Parra, J., J. Agudelo, L. Ortiz, M. C. Ramírez, B. Rodríguez, and A. López Herrera. “Lipopolysaccharide (LPS) from E. Coli Has Detrimental Effects on the Intestinal Morphology of Weaned Pigs”. Revista Colombiana De Ciencias Pecuarias, vol. 24, no. 4, Jan. 2012, pp. 598-0, doi:10.17533/udea.rccp.324719.