วีดีโอ

A video showing one method commonly used by forensic scientists to detect bloodstaining.

A bloody fingerprint, laid down by an attacker whose hands are wet with a victim's blood, is amongst the most powerful evidence in criminal investigation. However, an "innocent" print - made in something other than blood - can be mistaken for a incriminating bloody fingerprint. Diaminobenzidine (DAB) can be used to identify true bloody fingerprints. DAB also enhances the appearance of bloody fi...