The transgene contains prearranged Tcr loci from CD4 T cell hybridoma 1E4.C1 (Valpha9Jalpha21 and Vbeta8.3Dbeta1Jbeta2.1), which recognizes the dominant gastritogenic epitope Atp4b residues 253-277. The pound symbol (#) is used when no line is specified and/or lines are pooled. (J:243631)