The biology of lymphocytes is regulated by a large and seemi& growing number of soluble and cell-associated species. A current list includes: interleukins IL l-7, interferons, antigen and perhaps CD4 and cytokines derived from non-lymphoid tissues such as neuropepride, steroid and admnergic hormones. The quality and quantity of regulators present in the B cell milieu during an immunologic insul...
