Articles by Hanaa A. Ghabban In JoVE (1) Deferred Growth Inhibition Assay to Quantify the Effect of Bacteria-derived Antimicrobials on Competition Other Publications (0) Articles by Hanaa A. Ghabban in JoVE Biology Deferred Growth Inhibition Assay to Quantify the Effect of Bacteria-derived Antimicrobials on Competition Josephine C. Moran1, Emma L. Crank1, Hanaa A. Ghabban1, Malcolm J. Horsburgh1 1Institute of Integrative Biology, University of Liverpool The deferred growth inhibition assay can be used to assess the competition effect by one bacterial isolate on another. Inhibition is quantified by measuring the zone of clearing around the inhibitor-producing isolate, or qualitatively assessed by determining the visible extent of inhibition.