A new human B-cell lymphoma cell line was established from a pleural effusion of a patient with a diffuse large cell lymphoma which originated from an ileocecal tumor. The cell line, designated KAL-1, has been passaged 280 times over a period of 22 months. This cell line was successfully maintained in a chemically defined serum-free medium; its doubling time is approximately 24 h. Immunological...

Amino acid (aa) sequence homologies between viruses and autoimmune nuclear antigens are suggestive of viral involvement in disorders such as systemic lupus erythematosus (SLE) and scleroderma. We analyzed the frequency of exact homologies of greater than or equal to 5 aa between 61 viral proteins (19,827 aa), 8 nuclear antigens (3813 aa), and 41 control proteins (11,743 aa). Both pentamer and h...

We previously observed a loss of Epstein-Barr virus (EBV)-specific CD8+ T cells in subjects progressing to EBV-related non-Hodgkin lymphoma (NHL), correlating with loss of CD4+ T cells. The aim of the present study was to determine the role of EBV-specific CD4+ T cells in the development of NHL during chronic HIV infection. To this end, CD4+ and CD8+ memory T cells, capable of both proliferatio...

background: expression of epstein-barr virus latent member protein-1 (ebv lmp-1) and loss of p16 protein expression are documented in lymphoma, indicating a relationship between them, but this relationship is not clear and sometimes contradictory. thus, this study was conducted to examine the relationship between the loss of p16 and ebv lmp-1 expression in jordanian patients diagnosed with lymp...

The Epstein-Barr virus (EBV) is an attractive candidate pathogen for rheumatoid arthritis (RA) because it is persistent, ubiquitous, and has profound effects on the immune system (for review, see Tosato and Blaese'). Its persistence is due to its ability to remain latent in two cell types-the B lymphocyte and the salivary gland epitheliumlboth of which could be envisaged as possible sources for...

Virus associated hemophagocytic syndrome (VAHS) are a heterogeneous group of disorders in which viral infection is associated with a proliferation of hemophagocytic histiocytes through the reticuloendothelial system. We report the case of a 21-year-old Korean man who presented to us with high fever, marked hepatosplenomegaly, severe hepatic dysfunction, coagulopathy, pancytopenia and marked pan...