The study describes the development of antigen-specific, H-2-restricted T cell hybridomas that produce interleukin-2 (IL-2) in response to specific antigens and H-2 molecules. The researchers used two techniques: long-term cultures of antigen-specific T cells and the fusion of normal T cells with tumor lines. They produced four hybridoma lines, each capable of producing IL-2 when challenged with specific antigens and H-2 molecules. These hybrids demonstrated that T cells recognize both antigens and H-2 molecules simultaneously, and that the H-2 restriction is not independent of antigen recognition. The results indicate that T cells do not recognize antigen and H-2 independently but rather require both for function. The study also shows that hybridomas can be produced with dual antigen/H-2 specificities, but no hybrids were found that combined the antigen specificity of one parent with the H-2 specificity of another. This suggests that antigen and H-2 recognition are not independent. The findings support models where antigen and H-2 recognition are interdependent, and provide insights into the structure and function of T cell receptors. The study highlights the importance of these hybridomas in understanding T cell receptor structure and function.The study describes the development of antigen-specific, H-2-restricted T cell hybridomas that produce interleukin-2 (IL-2) in response to specific antigens and H-2 molecules. The researchers used two techniques: long-term cultures of antigen-specific T cells and the fusion of normal T cells with tumor lines. They produced four hybridoma lines, each capable of producing IL-2 when challenged with specific antigens and H-2 molecules. These hybrids demonstrated that T cells recognize both antigens and H-2 molecules simultaneously, and that the H-2 restriction is not independent of antigen recognition. The results indicate that T cells do not recognize antigen and H-2 independently but rather require both for function. The study also shows that hybridomas can be produced with dual antigen/H-2 specificities, but no hybrids were found that combined the antigen specificity of one parent with the H-2 specificity of another. This suggests that antigen and H-2 recognition are not independent. The findings support models where antigen and H-2 recognition are interdependent, and provide insights into the structure and function of T cell receptors. The study highlights the importance of these hybridomas in understanding T cell receptor structure and function.