Table 1.

Normalized brain size following exposure with respect to sex.

7 d old	Sex	Brain wt/body wt	Brain Volume/body wt
	Female	0.0605	0.0505	(mean)
		0.0037	0.0020	(st dev)
	Male	0.0599	0.0488	(mean)
		0.0025	0.0068	(st dev)

Mean values with standard deviation are shown for Fig. 1. Brain weight-to-body weight and brain volume-to-body weight ratios are provided for each cohort 1-week (postnatal day 14) and 5–7 weeks (postnatal days 42–56) post exposure. Values for unexposed, naïve controls on postnatal day 7 are also listed.