Previous studies using TH + CFA + BP-induced EAO rat and vasectomized mouse models have demonstrated that the proteins endoplasmic reticulum 60, heat shock protein 70, a partial region of D3p domain of Zan with B cell epitope, and others are AIs that are involved in testicular autoimmune response3637. However, there is currently no information available on TGC-specific AIs. The aim of this study is to identify TGC-specific AIs using sera obtained from mice with EAO induced by TGC alone.