Ramón E. Narciandi Díaz1*, José Motolongo Viquillon2, Luis Pérez Figueroa2.
1Department of Technology Transfer, 2Division of Vaccine HBsAg, Center for Genetic Engineering and Biotechnology, Ave 31 e/158-190, Playa, P.O.Box 6162, Havana 10600, Cuba. Web site: http//www.cigb.edu.cu.
