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.
Photomicrographs depicting the distribution of gonadotropin-releasing hormone-like immunoreactivity in the preoptic area of photorefractory (A), short-term photosensitive (B), and long-term photosensitive (C) adult male dark-eyed juncos. All photomicrographs are taken at the same magnification. V, third ventricle.
