Steven Fowler of police forensics shows how Luminol Blood Detection Reagent Spray shows up bloody drag marks which may be undetectable in daylight. This image of a scene which might be of a location where a person was murdered and dragged away was actually created using pig's blood Pic By Craig Sillitoe melbourne photographers, commercial photographers, industrial photographers, corporate photographer, architectural photographers, This photograph can be used for non commercial uses with attribution. Credit: Craig Sillitoe Photography / http://www.csillitoe.com
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