TABLE 5.

BDNF protein levels.

Housing	Age	Mean	Standard Error
SE	P8	0.804	0.316
	P10	1.668	0.224
	P15	2.403	0.224
EE	P8	0.977	0.283
	P10	2.358	0.224
	P15	2.461	0.224

Means + s.e.m.s (ng/ml) of BDNF protein levels presented based on housing group and age. BDNF exhibited significant increases with age for both housing groups. A small increase in EE compared to SE samples was also detected at P10 (see text for details).