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.
UPLC-MS chromatogram of PTAD assay for Dhcr7-deficient Neuro2a cells. Shown are selective reaction monitoring of 7-DHC and its isotopic standard (d7-7DHC), desmosterol (Des), lanosterol (Lan), and their 13C-isotopic standards (313C-Des) and (313C-Lan).
