Defective Induction of CTLA-4 in the NOD Mouse is Controlled by the NOD Allele of Idd3/IL-2 and A Novel Locus (Ctex) Telomeric on Chromosome 1

¹Department of Medical Biosciences, Umeå University, Umeå, Sweden. E-mail: [email protected], ²Department of Medical Bio-sciences, Umeå University, Umeå, Sweden. E-mail: [email protected], ³Department of Medical Biosciences, Umeå University, Umeå, Sweden. E-mail: [email protected], ⁴Department of Medical Biosciences, Umeå University, Umeå, Sweden. E-mail: [email protected], ⁵Department of Medical Biosciences, Umeå University, Umeå, Sweden. E-mail: [email protected]