For Bodian staining, which procedural change would likely reduce precipitation and improve clarity?

• A. Use chemically cleaned glassware
• B. Increase staining time
• C. Decrease dehydration
• D. Use stronger oxidizer

Answer: (A)

In Bodian staining, silver deposition is sensitive to trace metal ions and other residues that can come from glassware. These contaminants can catalyze unintended silver precipitation, creating cloudy spots or background specks that obscure the true staining of neural elements. Using chemically cleaned glassware removes these ions and residues, reducing nonspecific precipitation and giving a crisper, more uniform stain that clearly highlights the intended structures.

The other options don’t address this root cause. Increasing staining time tends to deepen overall staining and can worsen background; changing dehydration steps or using a stronger oxidizer can alter the staining chemistry in ways that increase artifacts or damage tissue rather than reduce precipitation.