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The API 20E/NE system is a widely used biochemical test system designed for the rapid identification of Gram-negative bacteria. It specifically targets two groups: Enterobacteriaceae (API 20E) and non-Enterobacteriaceae (API 20NE).
When P. vulgaris is tested using the API 20E identification system [1] it produces positive results for sulfur reduction, urease production, tryptophan deaminase production, indole production, sometimes positive gelatinase activity, and saccharose fermentation, and negative results for the remainder of the tests on the testing strip.
It is important not misinterpret the bacterial growth as Pseudomonas or Bacillus spp. Other biochemical screening tools can also be used for detecting B. pseudomallei, including the API 20NE or 20E biochemical kit combined with Gram stain, oxidase test, typical growth characteristics, and resistance to certain antibiotics of the bacteria. [3]
Klebsiella aerogenes, [2] previously known as Enterobacter aerogenes, is a Gram-negative, oxidase-negative, catalase-positive, citrate-positive, indole-negative, rod-shaped bacterium. [3]
Diagnostic microbiology is the study of microbial identification. Since the discovery of the germ theory of disease , scientists have been finding ways to harvest specific organisms. Using methods such as differential media or genome sequencing , physicians and scientists can observe novel functions in organisms for more effective and accurate ...
The identification of E. corrodens may be delayed because of its slow growth in the absence of CO 2. [16] E. corrodens can be treated with penicillins , cephalosporins , or tetracyclines , however due to the resistant nature of the bacteria ongoing and recurring symptoms can be expected despite rigorous and prolonged antibiotic treatment. [ 17 ]
Examining colonial morphology is the first step in the identification of an unknown microbe. The systematic assessment of the colonies' appearance, focusing on aspects like size, shape, colour, opacity, and consistency, provides clues to the identity of the organism, allowing microbiologists to select appropriate tests to provide a definitive ...
Once a bacterium has been identified following microbiological culture, antibiotics are selected for susceptibility testing. [5] Susceptibility testing methods are based on exposing bacteria to antibiotics and observing the effect on the growth of the bacteria (phenotypic testing), or identifying specific genetic markers (genetic testing). [6]