1. In Brief. Subjects *IMMUNOLOGY, *CYTOKINES, *TUMOR necrosis factors, *GRAFT rejection, *INTERLEUKINS Abstract Presents an update on papers related to immunology as of January 2003. Impact of cytokines on surface lymphotoxinαβ; Immunoregulatory cells that can mediate graft rejection; Role of interleukin-21 receptor in regulating immunoglobulin production. Published 2003 Full Text View/download PDF