MODEL RELEASED. MODEL RELEASED. Forensic presumptive blood test. Image 4 of 5. Forensic officer holding a swab used in a Kastle-Meyer Presumptive Blood test. This test is used to verify if a residue is blood or not. The chemicals used change colour when they come into contact with blood. This swab shows a positive result,indicating that the stain is probably blood. DNA can be extracted from the stain and analysed and may provide evidence in a criminal investigation. For a sequence of images of the test,see H200/621 to H200/625 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Varney, Jim |
Bildgröße: | 4288 px × 2848 px |
Modell-Rechte: | vorhanden |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |