After staining with Lactophenol Cotton Blue, fungal structures typically appear as which color?

After staining with Lactophenol Cotton Blue, fungal structures typically appear as which color?

• A. Deep red
• B. Delicate light blue
• C. Green
• D. Yellow

Answer: (B)

Lactophenol Cotton Blue uses cotton blue dye that binds to chitin in fungal cell walls, giving fungal structures a blue color under the microscope. This staining provides good contrast against a pale background, so hyphae, spores, and other structures typically appear as a delicate light blue. The other colors would require different stains, not LPCB, so they don’t match what this stain produces.

Lactophenol Cotton Blue uses cotton blue dye that binds to chitin in fungal cell walls, giving fungal structures a blue color under the microscope. This staining provides good contrast against a pale background, so hyphae, spores, and other structures typically appear as a delicate light blue. The other colors would require different stains, not LPCB, so they don’t match what this stain produces.