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.
Representative CCD image read-outs of the Raman spectra of (A) sound enamel and (B) caries lesions containing both parallel- (upper channel) and cross- (lower channel) polarized components. Only the area on the CCD detector containing the Raman band at 959 cm-1 was shown.