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link to Gram Staining: Principle, Procedure, Results

Gram Staining: Principle, Procedure, Results

Danish physician Hans Christian Gram developed the Gram staining method in 1884. Gram staining procedure uses four chemicals; crystal violet, iodine, alcohol, and safranin, to stain...

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link to Catalase test: Principle, Procedure, Results, Uses

Catalase test: Principle, Procedure, Results, Uses

Catalase is an enzyme produced by microorganisms that live in oxygenated environments to neutralize the bactericidal effects of toxic forms of oxygen metabolites such as hydrogen peroxide (H2O2). The...

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link to Blood Agar and Types of Hemolysis

Blood Agar and Types of Hemolysis

Blood agar is an enriched bacterial growth medium. Fastidious organisms, such as streptococci, do not grow well on ordinary growth media but grow on blood agar. Blood agar is a growth medium with...

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link to MacConkey Agar: Composition, Uses, Colony Characteristics

MacConkey Agar: Composition, Uses, Colony Characteristics

MacConkey agar (MAC) is a selective and differential bacterial culture media. MacConkey medium is selective for gram-negative bacteria and differentiates the gram-negative bacteria based on...

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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 Bacterial Culture Media: Classification, Types, Uses

Bacterial Culture Media: Classification, Types, Uses

Defined media and complex media are two broad classes of culture media used in microbiology. Defined media are prepared by adding precise amounts of highly purified inorganic or organic chemicals to...

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