1. Department of Immunology, National School of Biological Sciences, National Polytechnic Institute, Av. Manuel M. Carpio and Plan de Ayala, Mexico City 11340, Mexico
2. Department of Experimental Pathology, Center for Research and Advanced Studies of the National Polytechnic Institute, Av. IPN 2508, Mexico City 07360, Mexico
3. Department of Cell Biology, Center for Research and Advanced Studies of the National Polytechnic Institute, Av. IPN 2508, Mexico City 07360, Mexico