Effect of Lactobacillus delbrueckii on cholesterol metabolism in germ-free mice and on atherogenesis in apolipoprotein E knock-out mice oleh L.R. Portugal, J.L. Gonçalves, L.R. Fernandes, H.P.S. Silva, R.M.E. Arantes, J.R. Nicoli, L.Q. Vieira, J.I. Alvarez-Leite