Table 9. Thyroid hormone test in pups on postnatal day 13 (ng/mL)

Group	Dose (mg/kg/day)		Male		Female
Group	Dose (mg/kg/day)		T4	TSH	T4	TSH
G1	0	Mean	47.587	0.798	43.957	0.686
		S.D.	9.637	0.372	6.026	0.388
		N	10	10	11	11
G2	12.5	Mean	44.055	0.606	39.470	0.630
		S.D.	5.913	0.269	8.560	0.272
		N	10	10	10	10
G3	50	Mean	37.761	0.813	44.206	0.768
		S.D.	4.995	0.289	11.480	0.247
		N	12	12	12	12
G4	200	Mean	36.519	0.854	39.232	0.824
		S.D.	13.047	0.253	11.042	0.161
		N	10	10	10	10

T4, thyroxine; TSH, thyroid stimulating hormone; N, number of animals.