Table 1.

Hormone Concentrations (M ± SEM) of Wild-Type Mice and Those With Selective Deletion of the Neuronal Nitric Oxide Synthase Gene (nNOS −/−)

	Wild-type		nNOS −/−
Hormone	Single	Pair	Single	Pair
Corticosterone (ng/mL)	141 ± 28.9	117 ± 35.1	104 ± 30.2	140.2 ± 17.6
Testosterone (ng/mL)	7.5 ± 3.6	6.6 ± 4.6	5.2 ± 2.7	4.3 ± 3.8

Note. There was no effect of housing condition or genotype on corticosterone or testosterone concentrations.