title: R plasmids of a new incompatibility group determine constitutive production of H pili.
mesh_terms: D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects / Q000235:genetics*; D010861:Fimbriae, Bacterial / Q000502:physiology* / Q000648:ultrastructure; D014644:Genetic Variation; D008854:Microscopy, Electron; D011815:R Factors; D013045:Species Specificity; D014295:Trimethoprim / Q000494:pharmacology
chemical_list: D014295:Trimethoprim