1. Department of Specialization in Periodontology, Faculty of Dentistry, Autonomous University of Yucatan, Merida, Yucatan, ZIP 97000, Mexico
2. Cellular Biology Laboratory, Regional Research Center “Dr. Hideyo Noguchi”, University of Yucatan, Merida, Yucatan, ZIP 97000, Mexico
3. Basic Science Laboratory, Faculty of Dentistry, San Luis Potosi University, San Luis Potosi, SLP, ZIP 78290, Mexico
4. Department of Pathology, Faculty of Dentistry, University of Chile, Santiago, ZIP 8380000, Chile