Fig. 7.
Photomicrographs depicting Fos expression (black stain) in orexin-immunoreactive cells in the lateral hypothalamus (brown stain, panels A, B and C), and in GnRH-immunoreactive neurons (brown stain, panels D, E and F). No wheel: A and D; Locked wheel: B and E; Unlocked wheel: C and F. Bar in panel A represents 50 microns. Insets are at a 2-fold higher magnification.
