... origin. Arthritis ResTher 2005, 7:R784-R795.38. Katz Y, Nadiv O, Beer Y: Interleukin-17 enhances tumor necro-sis factor alpha-induced synthesis of interleukins 1,6, and 8 in skin and synovial ... cells and B cells, the products they produce, including cytokines and autoantibodies, and the genetic factors potentially involved in their regulation and function.T cells In contrast to the clearly ... anti-CD20 antibody[2], and the increased interest in the role of autoantibodies in RA. In addition to producing antibodies, proinflammatorycytokines and chemokines, B cells efficiently act as antigen-presenting...