Rag1 and H2-Ab1 deficient NOD mice carrying transgenes encoding humanized CD4 and HLA-DQ6 lack T and B cells and are free of autoimmune diabetes and cardiomyopathy, and do not develop thyroiditis. This model is useful in adoptive transfer experiments and in studying MHC class II-based resistance and susceptibility in autoimmunity. The Jackson Laboratory 2024, used with permission.