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Category: Biochemical Tests

link to MUG (Beta-Glucuronidase) Test for E. coli

MUG (Beta-Glucuronidase) Test for E. coli

MUG is an acronym for 4-methylumbelliferyl-β-D-glucuronide. Since 97% of Escherichia coli strains produce the enzyme β-D-glucuronidase, MUG test can be used for rapid identification of E....

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link to Triple Sugar Iron (TSI) Agar: Principle, Results, and Interpretation

Triple Sugar Iron (TSI) Agar: Principle, Results, and Interpretation

Whenever you see the name of this test i.e. 'Triple Sugar Iron Agar', you have to remember that it's a test that has three sugar (lactose, sucrose, and glucose) and also iron; and it contains...

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link to Optochin Sensitivity Test: Principle, Procedure, Results

Optochin Sensitivity Test: Principle, Procedure, Results

Streptococcus pneumoniae strains are sensitive to the chemical optochin (ethylhydrocupreine hydrochloride). Optochin sensitivity allows for the presumptive identification of alpha-hemolytic...

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link to Bile Solubility Test: Principle, Procedure, Results

Bile Solubility Test: Principle, Procedure, Results

The bile (sodium deoxycholate) solubility test distinguishes Streptococcus pneumoniae from all other alpha-hemolytic streptococci.  Streptococcus pneumoniae is bile soluble, whereas all other...

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link to Citrate Utilization Test: Principle, Procedure, Results

Citrate Utilization Test: Principle, Procedure, Results

The citrate utilization test is commonly employed as part of a group of tests, the IMViC (Indole, Methyl Red, VP, and Citrate) tests, that distinguish between members of the Enterobacteriaceae...

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link to Bacitracin Test: Principle, Procedure, Results

Bacitracin Test: Principle, Procedure, Results

Bacitracin is a bactericidal drug that is useful in treating superficial skin infections but is too toxic for systemic use. Bacitracin is a polypeptide antibiotic produced by Bacillus subtilis....

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