1. Area of Helminthology, CENID-Animal Health and Safety, INIFAP, Jiutepec, Mexico.
2. Tropical Mushroom Laboratory, Southern Frontier College, Tapachula, Mexico.
3. Biotechnology Department, Center for the Development of Biotic Products, Yautepec, Mexico.
4. Southern Biomedical Research Center, Mexican Institute of Social Security, Xochitepec, Mexico.