%0 Journal Article %T Diversity and molecular evolution of the RPS2 resistance gene in Arabidopsis thaliana %A Caicedo, A. L. %A Schaal, B. A. %A Kunkel, B. N. %A , %J Proceedings of the National Academy of Sciences %@ 0027-8424 %D 1999-01-05 %I Proceedings of the National Academy of Sciences %~ DeepDyve