Indian J Med Microbiol Close
 

Figure 1: Modifi ed (right) and re-modifi ed (left) Hodge test: Three strains plated as mirror images around an Imipenem disc on the right and an Imipenem plus zinc sulphate disc on the left. Strains A and B show enhancement of growth of indicator strain E. coli ATCC 25922 around an 'I+Zn' disc compared to an 'I' only disc. There is no change in case of strain C which shows an equally positive test around both discs

Figure 1: Modifi ed (right) and re-modifi ed (left) Hodge test: Three strains plated as mirror images around an Imipenem disc on the right and an Imipenem plus zinc sulphate disc on the left. Strains A and B show enhancement of growth of indicator strain E. coli ATCC 25922 around an 'I+Zn' disc compared to an 'I' only disc. There is no change in case of strain C which shows an equally positive test around both discs