1. Laboratory of Recognition and Biological Activity Assays, Department of Quality Control, Center of Molecular Immunology, Playa, P.O. Box 16040, Havana 11600, Cuba
2. Department of Pathology, Manuel Fajardo General Hospital, Plaza de la Revolución, Havana 10400, Cuba
3. Research and Development Direction, Center of Molecular Immunology, Havana, Cuba