Basic fuchsin

Definition

Basic fuchsin is a magenta dye used in microbiology for staining specimens. It is commonly employed in differential staining techniques to visualize microorganisms under a microscope.

5 Must Know Facts For Your Next Test

1. Basic fuchsin is an essential component of the Ziehl-Neelsen stain, used to identify acid-fast bacteria like Mycobacterium tuberculosis.
2. It binds strongly to acidic components of cells, such as nucleic acids and certain proteins.
3. In Gram staining, basic fuchsin can be used as a counterstain to differentiate bacterial species.
4. It has applications in histology for staining connective tissue and collagen fibers.
5. Basic fuchsin solutions are typically prepared with phenol to enhance dye penetration into cells.

Related terms

Gram Stain:

A differential staining technique that classifies bacteria into Gram-positive and Gram-negative.

Ziehl-Neelsen Stain: A special stain used for detecting acid-fast organisms like Mycobacterium species.

Phenol:

A compound often added to basic fuchsin solutions to improve dye penetration.