MOLECULAR IDENTIFICATION OF CTX GENE OF EXTENDED SPECTRUM BETA-LACTAMASES (ESBL) PRODUCING ESCHERICHIA COLI ON LAYER CHICKEN IN BLITAR, INDONESIA - F. J. Wibisono; B. Sumiarto; T. Untari; M. H. Effendi; 5; D. A. Permatasari; A. M. Witaningrum (Journal of Animal and Plant Sciences, 2020)