Brown and Brenn staining is used to identify which of the following organisms?

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Multiple Choice

Brown and Brenn staining is used to identify which of the following organisms?

Explanation:
Brown and Brenn staining highlights Gram-positive bacteria in tissue sections. This histochemical method selectively stains the thick peptidoglycan-rich cell walls of Gram-positive organisms, making them stand out against the surrounding tissue and other structures. In routine tissue work, this helps identify bacterial infections where simple stains may be inconclusive, especially in formalin-fixed paraffin sections. Fungi are usually detected with fungal-specific stains (like PAS or Gomori methenamine silver), viruses aren’t visualized reliably by light microscopy in this way, and nuclei are typically stained by hematoxylin rather than Brown and Brenn. So the stain is most useful for identifying Gram-positive bacteria.

Brown and Brenn staining highlights Gram-positive bacteria in tissue sections. This histochemical method selectively stains the thick peptidoglycan-rich cell walls of Gram-positive organisms, making them stand out against the surrounding tissue and other structures. In routine tissue work, this helps identify bacterial infections where simple stains may be inconclusive, especially in formalin-fixed paraffin sections. Fungi are usually detected with fungal-specific stains (like PAS or Gomori methenamine silver), viruses aren’t visualized reliably by light microscopy in this way, and nuclei are typically stained by hematoxylin rather than Brown and Brenn. So the stain is most useful for identifying Gram-positive bacteria.

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