[160] Within the Herpesviridae , Kaposi's sarcoma-associated herpesvirus causes Kaposi's sarcoma and body cavity lymphoma, and Epstein–Barr virus causes Burkitt's lymphoma , Hodgkin’s lymphoma , B lymphoproliferative disorder , and nasopharyngeal carcinoma . [161] Merkel cell polyomavirus closely related to SV40 and mouse polyomaviruses that have been used as animal models