S-30 Drug discovery for autoimmune diseases: in view of heterogeneity of pathogenesis   S30-1. Exploration of novel therapeutic targets in multiple sclerosis   S30-2. NIT cells in autoimmunity   S30-3. Application of a sphingosine 1-phosphate receptor modulator, FTY720 for therapy of autoimmune diseases   S30-4. The new therapeutic strategy for autoimmune and chronic inflammatory disease based on the clinical results by IL-6 blocking therapy with a humanized anti IL-6 receptor antibody   S30-5. B cell-targeting therapy for autoimmune disease