title: Request for specimens from organ transplant and immunodeficiency patients who developed lymphomas.
mesh_terms: D004854:Herpesvirus 4, Human / Q000302:isolation & purification*; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000150:complications*; D008223:Lymphoma / Q000209:etiology*; D012107:Research Design; D014184:Transplantation, Homologous / Q000009:adverse effects*