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.
A Nissl-stained parasagittal section of a near-term fetal sheep brain that depicts the Pf in relation to other brain sectors. The rostral cut represents a transection that left intact hypoxic inhibition of fetal breathing movements. MD, mediodorsal thalamic nucleus; Hb, habenula; SC, superior colliculus; Rub, red nucleus; Ptm, medial pretectal area; fr, fasciculus retroflexus. Horizontal bar = 1 mm.
