to investigate if brain oxy might have a role in the onset of maternal behavior at parturition , we have used both antisera to oxy and an analog antagonist of oxy , d ( ch2 ) 5-8-ornithine-vasotocin , to reduce the activity of endogenous oxy in a pregnancy-terminated preparation which yields reliable short-latency maternal behavior .
C0006104
brain
C0004927
behavior