ESBL, MBL AND AMP C-β LACTAMASES PRODUCED BY SUPERBUGS: AN EMERGING THREAT TO CLINICAL THERAPEUTICS Journal title: International Journal of Pharmacy and Pharmaceutical Sciences Authors: Shivani Saxena, Gopa Banerjee, Rajiv Garg, Mastan Singh, S. K Verma, R. A. S. Kushwaha Subject(s):