%0 Journal Article %T Biological function of pathogenesis-related proteins: Four tobacco pathogenesis-related proteins are chitinases %A Legrand, Michel %A Kauffmann, Serge %A Geoffroy, Pierrette %A Fritig, Bernard %A , %J Proceedings of the National Academy of Sciences %@ 0027-8424 %D 1987-10-01 %I Proceedings of the National Academy of Sciences %~ DeepDyve