Which staining technique is described as a silver impregnation method for neural tissue?

• A. Holmes
• B. Cajal
• C. Bodian
• D. Bielschowsky

Answer: (A)

Silver impregnation methods rely on argentophilic properties of neural tissue to deposit metallic silver on delicate neural elements, making axons, dendrites, and neurofibrils stand out against a lighter background. The Holmes stain is a classic example described specifically as a silver impregnation technique for neural tissue; it produces a dark, robust visualization of nerve fibers and neuronal processes, which is why it’s particularly useful for studying neural architecture and pathology in brain sections. While other silver methods exist for neural elements, the Holmes approach is the one most commonly described in this way, highlighting neural structures with clear contrast.