Description: The KJ1-26 anti-idiotypic monoclonal antibody binds the T-cell receptor (TCR) expressed on DO11.10 and DO11.10.24 murine T cell hybridomas, but not on any other T cell hybridomas tested.The TCR expressed on DO11.10 recognizes an ovalbumin peptide in the context of I-A^{d^} major histocompatibility molecules.The use of DO11.10 and KJ1-26 have proven to be instrumental in describing many of the intricate details of T cell immunity.