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.
ToF-SIMS results for fossil sample CUGB P1401 sample Y (A) compared to spectra from extracted crow melanin (B) and a CUGB P1401 matrix (C) sample. Asterisks indicate theoretical peaks for eumelanin from Lindgren et al. (2015b).
