title: Two new classes of F-pili mutants of Escherichia coli resistant to infection by the male specific bacteriophage F2.
mesh_terms: D003090:Coliphages; D004926:Escherichia coli; D005827:Genetics, Microbial; D008854:Microscopy, Electron; D009154:Mutation; D010759:Phosphorus Isotopes
chemical_list: D010759:Phosphorus Isotopes