Table 1

HbCO levels in pregnant rats exposed to CO

CO	GD 10	GD 20
ppm
0	0.97 ± 0.02 (6)	1.62 ± 0.10^1-150 (5)
150	14.42 ± 0.52^1-160 (6)	16.08 ± 0.88^1-160 (4)

Data are expressed as means ± S.E., number of animals is indicated in parentheses.

↵1-150 P < .001 vs. GD 10;
↵1-160 P < .0001 vs. controls (Student'st test with Bonferroni's correction).