Transgenic constructs containing the mouse alpha and beta chain of the T cell receptor recognizing both bovine and mouse type II collagen (260-267) were cloned from the Tcra-V11.1,Tcra-J(J17) and Tcrb-V8.3,Tcrb-D(D1),Tcrb-J(J1.4) expressing I-Aq-restricted T cell hybridoma qCII85.33. Line 24 was established. The transgenic T cell receptor is expressed on >90% of CD4+ T cells in the spleen and lymph nodes. >90% of alphabeta+ T cells in the thymus.