Valpotić, H., et al. “Increased Number of Intestinal Villous M Cells in Levamisole - Pretreated Weaned Pigs Experimentally Infected With F4ac+ Enterotoxigenic Escherichia Coli Strain”. European Journal of Histochemistry, vol. 54, no. 2, July 2010, p. e18, doi:10.4081/ejh.2010.e18.