Bradford, P A Characterization of expanded-spectrum cephalosporin resistance in E. coli isolates associated with bovine calf diarrhoeal disease. [electronic resource] - The Journal of antimicrobial chemotherapy Nov 1999 - 607-10 p. digital Publication Type: Journal Article ISSN: 0305-7453 Standard No.: 10.1093/jac/44.5.607 doi Subjects--Topical Terms: AnimalsCattleCattle Diseases--microbiologyCephalosporin ResistanceCephalosporins--pharmacologyDiarrhea--microbiologyEscherichia coli--classificationEscherichia coli Infections--microbiologyHumansIsoelectric FocusingMicrobial Sensitivity TestsPolymerase Chain ReactionVirulence--geneticsbeta-Lactamases--chemistrybeta-Lactams--pharmacology