Amino acid polymorphism at residue 71 in HLA-DR beta chain plays a critical role in susceptibility to ulcerative colitis

1. De La Concha, E.G.
2. Fernandez-Arquero, M.
3. Martinez, A.
4. Vigil, P.
5. Vidal, F.
6. Lopez-Nava, G.
7. Diaz-Rubio, M.
8. Garcia-Paredes, J.