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 bright-field photomicrographs of the left nucleus tractus solitarius at −13.8 mm caudal to bregma from an untreated lean Zucker rat (LZR) (A) and obese Zucker rat (OZR) (B) and a metformin-treated LZR (C) and OZR (D). Scale bar = 250 µm. AP, area postrema; CC, central canal; TS, tractus solitarius.
