Touch Gna News Today

And fingerprint purposes. >> when you say touch gna, what does that mean. >> its not like touch dna for physical blood. its something you may not see. >> how do you process an item for touch gna? >> use aster aisle swab with distilled water, put that on the tip of the stare aisle swab, swab the area for a few minutes, package it, and secure it. >> all right. and did you do that with the firearm in this case? >> yes, i did. >> and can you show the jury what areas of the firearm you processed for ...