Tag: Streptococcus

Biochemical Test and Identification of Streptococcus pyogenes 4.31/5 (13)

Biochemical Test and Identification of Streptococcus pyogenes

Biochemical Test and Identification of Streptococcus pyogenes ­Basic Characteristics Properties (Streptococcus pyogenes) CAMP Negative (-ve) Capsule Capsulated Catalase Negative (-ve) Gram Staining Gram Positive (+ve) Hemolysis Beta Hemolytic Motility Non-Motile OF (Oxidative-Fermentative) Facultative Anaerobes PYR Positive (+ve) Shape Cocci Spore Non-Sporing Urease Negative (-ve) VP (Voges Proskauer) Negative (-ve) 6.5% NaCl Growth Negative (-ve) Fermentation […]

Differences Between Staphylococcus and Streptococcus 4.58/5 (311)

Differences Between Staphylococcus and Streptococcus

Differences Between Staphylococcus and Streptococcus Staphylococcus and Streptococcus are both Gram positive organisms and cocci in shape. They are Non-motile, Non-Sporing and Facultative anaerobes. But they possess some of the differences which are as follows: S.N Characteristics Staphylococcus Streptococcus 1 Arrangement Grape-like clusters. A chain of round cells. 2 Division Staphylococci divide in various directions (multiple axes). Division occurs […]

Optochin Susceptibility Test for the identification of Streptococcus pneumoniae 4.87/5 (15)

Result Interpretaion of Optochin Susceptibility Test

Optochin Susceptibility Test for the identification of Streptococcus pneumoniae Differentiation of Streptococcus pneumoniae from other viridans streptococci depends on demonstrating optochin susceptibility, bile solubility, reaction with a specific DNA probe, or detection of species-specific capsular polysaccharides. Most clinical microbiology laboratories today depend on the optochin susceptibility test. Although optochin susceptibility was first described for differentiating […]

Cultural Characteristics of Streptococcus 3.96/5 (25)

Beta-hemolysis on blood agar (Streptococcus pyogenes)

Cultural Characteristics of Streptococcus 1. They are aerobic and facultative anaerobes. 2. They grow best at 37 degree Celsius. 3. Group D grow well at between 10 degree Celsius and 45 degree Celsius. 4. Growth is poor on solid media or broth. 5. Grow well in media containing blood and sugar ( fermentable carbohydrates) and […]

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