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Category: Biochemical Tests

link to String test for Lab diagnosis of Vibrio cholerae

String test for Lab diagnosis of Vibrio cholerae

When an isolated colony (18-24 hour growth) of a suspected bacterium is emulsified in sodium deoxycholate or sodium taurocholate (commonly known as bile salt), it lyses the cell wall of the bacterium...

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link to DNase Test: Principle, Procedure, Results

DNase Test: Principle, Procedure, Results

DNA hydrolysis test or Deoxyribonuclease (DNase) test is used to determine the ability of an organism to hydrolyze DNA and utilize it as a source of carbon and energy for growth. DNase agar is a...

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link to Methyl Red (MR) Test: Principle, Procedure, and Results

Methyl Red (MR) Test: Principle, Procedure, and Results

Methyl Red (MR) test determines whether an organism performs mixed acid fermentation and produces stable acid end products. Methyl red is the indicator that detects the pH after an enteric...

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link to Gelatin Hydrolysis Test: Principle, Procedure, Results

Gelatin Hydrolysis Test: Principle, Procedure, Results

Gelatin is a protein derived from the animal protein collagen-a component of vertebrate connective tissue. It has been used as a solidifying agent in food for a long time. Organism producing...

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link to Bile-Esculin test for Enterococcus species

Bile-Esculin test for Enterococcus species

Bile-esculin test is widely used to differentiate Enterococci and non-enterococcus group D streptococci, which are bile tolerant and can hydrolyze esculin to esculetin, from non-group D viridans...

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link to Salt Tolerance Test for Enterococcus species

Salt Tolerance Test for Enterococcus species

Salt tolerance test is used in the identification of enterococcal group D Streptococcus on the basis of their salt tolerance. The ability of the bacteria to grow in the presence of a variable amount...

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