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Kaposi's sarcoma-associated herpesvirus (KSHV) K3 and K5 proteins dramatically downregulate MHC class I molecules. However, although MHC class I downregulation may protect KSHV-infected cells from cytotoxic T lymphocyte recognition, these cells become potential targets for natural killer (NK) cell-mediated lysis. We now show that K5 also downregulates ICAM-1 and B7-2, which are ligands for NK cell-mediated...
Tip of herpesvirus saimiri associates with Lck and down-regulates Lck-mediated activation. We identified a novel cellular Tip-associated protein (Tap) by a yeast two-hybrid screen. Tap associated with Tip following transient expression in COS-1 cells and stable expression in human Jurkat-T cells. Expression of Tip and Tap in Jurkat-T cells induced dramatic cell aggregation. Aggregation was likely...
This study characterizes the gut-associated lymphoid tissue (GALT) of normal healthy rhesus macaques and compares the percentages of T and B cell subsets to those of systemic lymphoid tissue. Lymphocytes from the systemic lymphoid tissue (spleen, axillary, and inguinal lymph nodes), mesenteric lymph nodes (MLN), and intestinal epithelium (IEL) and lamina propria (LPL) of the jejunum, ileum, and colon...
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