Mm, I'm not a forensic expert, but, from what I understand, luminol is a chemical that glows when it reacts with blood, and can be used to find trace amounts at a scene where the blood has been cleaned up.
DNA is... well, it's what you're made up of. The genetic data that makes you... you. If something like a hair or the killers blood is found at the scene, their DNA can be sequenced from it and potentially matched with someone.
DNA is... well, it's what you're made up of. The genetic data that makes you... you. If something like a hair or the killers blood is found at the scene, their DNA can be sequenced from it and potentially matched with someone.


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