1. Department of Basic Research and Immunology, National Institute of Oncology and Radiobiology, 29 and F Street Vedado, 10400 Havana, Cuba
2. Department of Cell Biology and Tissues Banking, National Institute of Oncology and Radiobiology, 29 and F Street Vedado, 10400 Havana, Cuba
3. Department of Pathology, Manuel Fajardo Hospital, Zapata and D Street Vedado, 10400 Havana, Cuba
4. Department of Pathology, National Institute of Oncology and Radiobiology, 29 and F Street Vedado, 10400 Havana, Cuba
5. Department of Surgery, National Institute of Oncology and Radiobiology, 29 and F Street Vedado, 10400 Havana, Cuba
6. Research and Development Direction, Center of Molecular Immunology, 216 Street and 15 Avenue Atabey, Playa, P.O. Box 16040, 11600 Havana, Cuba