An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
MacCrehan, W.
, Layman, M.
and Secl, J.
(2003),
Hair Combing to Collect Organic Gunshot Residues (OGSR), Forensic Science International
(Accessed September 21, 2023)