A golden yellow pigment producing strain of Staphylococcus aureus on blood agar

D-Zone Test: Introduction, Principle, Procedure, Result-Interpretation, Clinical Significance, and Keynotes

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D-Zone Test Positive strain of Staphylococcus aureus

Introduction The D-Zone test identifies inducible clindamycin resistance in bacteria. Typically, it involves using erythromycin and clindamycin discs on an agar plate. When placed near each other, the interaction is observed. If a D-shaped zone appears around clindamycin, resistance is confirmed. Consequently, this test helps …

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Staphylococcus and Micrococcus: Introduction, Differentiating Features, Keynotes, and Related Footages

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Staphylococcus Vs Micrococcus: Introduction, Differentiating Features, Keynotes, and Related Footages

Introduction of Staphylococcus and Micrococcus Staphylococcus (pleural-staphylococci) is spherical, non-motile, gram-positive in singles, pairs, and clusters. On nutrient agar, growth is opaque and golden yellow or white color. Catalase and coagulase test positive (Staphylococcus aureus), oxidase negative, aerobic or facultative anaerobe. Parasite of humans and …

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