http://medicalxpress.com/news/2011-08-b-cell-discovery-women-autoimmune-disease.html
Not sure if this the right place but since some of the XMRV talk is about B cells I thought I put it in here.
Researchers at National Jewish Health have discovered a type of cell that may contribute to autoimmune disease and suggests why diseases such as lupus, multiple sclerosis and rheumatoid arthritis strike women more frequently than men. The cells, a subset of immune-system B cells, make autoantibodies, which bind to and attack the body's own tissue. The researchers reported in the August 4, 2011, issue of the journal Blood, that they found higher levels of these cells in elderly female mice, young and old mice prone to autoimmune disease, and humans with autoimmune diseases. National Jewish Health has applied for a patent for a method to treat autoimmune disease by depleting these cells.
Not sure if this the right place but since some of the XMRV talk is about B cells I thought I put it in here.