The Alcian blue staining procedure uses which suffix/variant?

• A. 8GX
• B. 1.0
• C. 2.5
• D. Pyridine variant

Answer: (A)

Alcian blue staining relies on a positively charged dye binding to negatively charged acidic mucopolysaccharides. In routine histology, the reagent is most often designated by the suffix 8GX, i.e., Alcian blue 8GX. This specific formulation is the standard variant used in many protocols, providing a reliable and vivid blue stain of acidic mucins in tissue sections.

The other options refer to pH conditions or a pyridine-containing formulation, which are less about the common naming of the reagent itself. The pH numbers indicate different staining conditions intended to differentiate mucin types, not the typical reagent variant name. The pyridine variant exists in some protocols but is not the standard naming convention used here.

So, the familiar and widely used variant is Alcian blue 8GX.