Research-Professor, assigned to the Biology Program, Faculty of Sciences. National Autonomous University of Mexico (UNAM). Teaching at Bachelor and Doctorate level: Cellular Biology, Environmental Genotoxicology, Development and Reproduction Biology. Faculty of Sciences. National Autonomous University of Mexico (UNAM) Research line: Cytogenetic and Mutagenic Biomonitoring of Environmental Contaminants. Recognitions: Member of the National System of Researchers (Level 1) National and international reviewer: Journals of: Molecular Toxicology & Mechanisms; Toxicology: Plos One, Environmental Science and Pollution Research (ESPR); Atmospheric Environment, Toxicology In Vitro among others. By invitation he is an Editorial Fellow of the journal, Journal of Archives of Industrial Hygiene and Toxicology and Advances in Clinical Toxicology.