1. Medical Research Unit-Zacatecas, Mexican Institute for Social Security-IMSS, Zacatecas, Mexico
2. Laboratory of Immunology, Department of Microbiology, Center of Basic Sciences, Autonomous University of Aguascalientes, Aguascalientes, Mexico
3. Laboratory of Immunology of Infectious Diseases, Instituto de Biomedicina “Dr. Jacinto Convit”, Central University of Venezuela, Caracas, Venezuela
4. Laboratory of Immunotoxicology and Experimental Therapeutics, Post-graduate program in Sciences and Chemical Technology, Chemistry Sciences School, University Autonomous of Zacatecas, Zacatecas, Mexico
5. Laboratory of Experimental Pathology, Nacional Institute of Medical Sciences and Nutrition “Salvador-Zubiran”, Mexico City, Mexico