title: Checking your imagination: applications of the free R value.
authors.affiliation: Department of Molecular Biology, Biomedical Centre, Uppsala University, Box 590, S-751 24 Uppsala, Sweden.
authors.forename: G J
authors.initials: GJ
authors.lastname: Kleywegt
authors.forename: A T
authors.initials: AT
authors.lastname: Brünger
mesh_terms: D018360:Crystallography, X-Ray; D003627:Data Interpretation, Statistical; D008956:Models, Chemical; D015394:Molecular Structure; D011487:Protein Conformation