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.
Images of immunoreactivity (ir) signals of tyrosine hydroxylase (TH) in human locus coeruleus (LC) neurons. According to the different wavelengths of light, TH-ir (blue) was separated from the signal of neuromelanin (brown). Microscope images showed both the TH-ir and neuromelanin signals in the LC neurons (A). The brown signal (B) and blue signal (C) were separated from the original image (scale bar, 200 μm).
