Increased in vivo production of tumor necrosis factor after development of diabetes in non-treated, long-term diabetic BB rats. - Tanaka,S.; Seino,H.; Satoh,J.; Fujii,N.; Rikiishi,H.; Zhu,X.P.; Takahashi,K.; Sagara,M.; Nobunaga,T.; Toyota,T. (Clin Immunol Immunopathol, 1992)