Beryllium presentation to CD4+ T cells is dependent on a single amino acid residue of the MHC class II beta-chain.
Bill JR, Mack DG, Falta MT, Maier LA, Sullivan AK, Joslin FG, Martin AK, Freed BM, Kotzin BL, Fontenot AP. Beryllium presentation to CD4+ T cells is dependent on a single amino acid residue of the MHC class II beta-chain. J Immunol. 2005 Nov 15; 175(10):7029-37.