The Abb mouse was developed in the laboratory of Michael J. Grusby et al. of the Harvard School of Public Health. The model was created by targeting the H2-Ab1 gene in ES-D3 cells and injecting the targeted ES cells into C57BL/6 blastocysts. Resultant chimeras were backcrossed to C57BL/6 for 4 generations (N4). Taconic received stock from Tufts University in December 1991, and the mice were backcrossed eight additional generations (N12) to C57BL/6NTac. The mice were derived by embryo transfer and intercrossed to homozygosity.
Wild type for Nnt mutation, carries Pde6brd1 mutation
Grusby MJ, Johnson RS, Papaioannou VE, Glimcher LH. (1991) Depletion of CD4+ T-Cells in Major Histocompatibility Complex Class II - Deficient Mice. Science, 253(5026):1417-1420.