HHV-8 (13B10)

Human herpesvirus type 8 (HHV-8) is the likely etiological agent of Kaposis sarcoma (KS). HHV-8 DNA sequences have been found in Kaposis sarcoma lesions, primary effusion lymphoma, and multicentric Castlemans disease via polymerase chain reaction and in situ hybridization. Latent nuclear antigen (LNA-1, LNA, LANA-1), also known as ORF73, is a 222- or 234 kD protein that is consistently expressed in HHV-8 infected cells. Anti-HHV-8 labels the latent nuclear antigen protein via immunohistochemistry.