Deficiency of human BRCA2 leads to impaired homologous recombination but maintains normal non-homologous end-joining. - Xia,F.; Taghian,D.G.; DeFrank,J.S.; Zeng,Z.C.; Willers,H.; Iliakis,G.; Powell,S.N. (Proc Natl Acad Sci (USA), 2001)