Which reagents are reported to enhance bloody fingerprints effectively?

Both Coomassie Blue and Amino Black are reagents that have been effectively used to enhance the visibility of bloody fingerprints. When applied to a surface with latent prints containing blood, these dyes interact with proteins and other components in the blood.

Coomassie Blue is a dye commonly used in protein analysis and can stain proteins, helping to visualize the fingerprint pattern against the background. Similarly, Amino Black is specifically designed to stain proteins in blood and prints, creating a contrast that makes the prints stand out more clearly for examination.

The use of both reagents is significant in forensic science, as they can greatly aid in the development of latent prints on various surfaces where blood is present, contributing to the identification of individuals in criminal investigations. This makes the response indicating that both reagents are effective the appropriate choice.