AID is required to initiate Nbs1/gamma-H2AX focus formation and mutations at sites of class switching
Nature (2001) - Comments
pubmed: 11740565  doi: 10.1038/414660a  issn: 0028-0836  issn: 1476-4687 

Simone Petersen, Rafael Casellas, Bernardo Reina-San-Martin, Hua Tang Chen, Michael J. Difilippantonio, Patrick C. Wilson, Leif Hanitsch, Arkady Celeste, Masamichi Muramatsuk, Duane R. Pilch, Christophe Redon, Thomas Ried, William M. Bonner, Tasuku Honjo, Michel C. Nussenzweig, André Nussenzweig