IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-2-46220 Original Research Paper Prevalence And Molecular Characterization Of Extended Spectrum B-Lactamases Producing Escherichia Coli Recovered From Urine Samples Of Patients Attending Tertiary Care Hospital, Bathinda. Kashiramka Dr. Ramgopal Saini Dr. February 2023 12 2 01 02