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Luminol at Work - before spraying and after.

Credit: science.howstuffworks.com/luminol.htm
article: Luminol - Chemiluminescent Blood Detector 		Other images from this article
Luminol at Work - before spraying and after. Molecular Structure of Luminol Chemiluminescence of luminol
Luminol at Work - before spraying and after., science.howstuffworks.com/luminol.htm