The head of Animal facilities is a Zootechnical Veterinary Physician from the National Autonomous University of Mexico, a Veterinary Physician authorized in the area of ​​Vivariums by the Secretary of Agriculture and Rural Development (SADER) and by the National Service of Health, Safety and Agrifood Quality ( SENASICA), for 5 years has worked with immunocompetent and immunosuppressed mice and different strains in protocols involving in vivo models.