Effect of the injection of an extract of Ascaris suum on macrophage activation during the early phase of Mycobacterium bovis BCG infection in C57Bl/6 mice oleh A.P. Ferreira, F.M. Aarestrup, M.G. Bonecini-Almeida, E.E. Souza, E.A. Gomes, J.O.A. Corrêa, H.C. Teixeira