1. Departments of Animal Biology (M.C.G.-M., T.G., M.D.), University of La Laguna, 38206 Tenerife, Spain
2. Cancer Research Institute of the Canary Islands (M.C.G.-M., R.M., T.G., M.D.), University of La Laguna, 38206 Tenerife, Spain
3. Physiology (R.M.), University of La Laguna, 38206 Tenerife, Spain
4. Institute of Tropical Diseases and Public Health (R.M., J.A.P.), University of La Laguna, 38206 Tenerife, Spain
5. Genetics (J.A.P.), University of La Laguna, 38206 Tenerife, Spain