A warped cover slip might produce which observable issue on the slide?

• A. Distorted tissue
• B. Uniform staining
• C. Crisp color
• D. No distortion

Answer: (A)

When a cover slip is warped, it disrupts the flat mounting of the tissue. The glass bends and applies uneven pressure, changing the distance between the tissue and the cover slip across the slide. This creates a nonuniform mounting plane, so tissue sections appear stretched, compressed, or otherwise distorted in different areas as you view them. Properly mounted slides with flat coverslips keep the tissue in a consistent plane, preserving morphology. Uniform staining or crisp color depend on staining quality and preparation, not on mechanical distortion, and no distortion would be expected if the cover slip lay perfectly flat.