ebv barr epstein nk lymphoproliferative spectrum figure1 lymphoma infection hlh eber chronic lymphoid marrow bone
virus epstein barr ebv cells infection cd21 receptor tegument infect epithelial gp110 glycoproteins complement
ebv epstein barr oropharynx latency persistence lytic latent germinal lmps
ebv epithelial lytic naive latent latency epstein barr oropharynx reactivation infected programs