title: Evolutionary paths of least resistance.
authors.affiliation: Department of Integrative Biology, The University of Texas at Austin, Austin, TX 78712 wilke@austin.utexas.edu.
authors.forename: Claus O
authors.initials: CO
authors.lastname: Wilke
mesh_terms: D004926:Escherichia coli; D029968:Escherichia coli Proteins; D019143:Evolution, Molecular; D014176:Protein Biosynthesis / Q000235:genetics*; D001618:beta-Lactamases
chemical_list: D029968:Escherichia coli Proteins; D001618:beta-Lactamases