Which stain is most closely associated with reticulin demonstration?

• A. Gomori reticulin
• B. Verhoeff
• C. Aldehyde fuchsin
• D. Periodic acid-methenamine silver

Answer: (A)

Staining reticular fibers requires a method that makes the delicate network of type III collagen visible. The Gomori reticulin stain is the classic technique because it uses silver impregnation to deposit black metallic silver on the reticular fibers, producing a strong, high-contrast network against a contrasting background. This specific staining highlights the fine reticular framework, which is key for evaluating tissue architecture and fibrosis in organs like bone marrow and liver. In contrast, Verhoeff and aldehyde fuchsin are aimed at elastic fibers, not reticulin, and periodic acid-methenamine silver mainly highlights basement membranes and fungi, not the reticular fiber network.