title: Chronic active Epstein-Barr virus infections in two immunodeficient patients.
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology; D002908:Chronic Disease; D005260:Female; D006566:Herpesviridae Infections / Q000276:immunology*; D004854:Herpesvirus 4, Human; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000276:immunology*; D007223:Infant; D011020:Pneumonia, Pneumocystis / Q000276:immunology; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology; D014766:Viremia / Q000276:immunology