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Table 1.

The number of observations, median values with the lower and upper quartiles of all investigated stereological parameters in the thyroid gland of control and EMF-exposed animals

		Control group					Exposed group
Stereological parameter	N	Median	Lower quartile	Upper quartile	Median	Lower quartile	Upper quartile	Pvalue^{^*}
V_ve (mm³ mm⁻³)	10	0.52	0.49	0.57	0.58	0.54	0.59	0.020
V_vk (mm³ mm⁻³)	10	0.24	0.21	0.32	0.16	0.15	0.18	0.005
V_vf (mm³ mm⁻³)	10	0.80	0.75	0.82	0.74	0.71	0.76	0.053
Ia	10	2.26	1.53	2.90	3.53	3.28	3.87	0.002
V_vi (mm³ mm⁻³)	10	0.19	0.17	0.25	0.25	0.23	0.29	0.048
N_vc (mm⁻³)	5	101914	101106	103339	138442	106958	148525	0.117
V_vc (mm³ mm⁻³)	5	0.028	0.025	0.032	0.038	0.038	0.047	0.037

		Control group					Exposed group
Stereological parameter	N	Median	Lower quartile	Upper quartile	Median	Lower quartile	Upper quartile	Pvalue^{^*}
V_ve (mm³ mm⁻³)	10	0.52	0.49	0.57	0.58	0.54	0.59	0.020
V_vk (mm³ mm⁻³)	10	0.24	0.21	0.32	0.16	0.15	0.18	0.005
V_vf (mm³ mm⁻³)	10	0.80	0.75	0.82	0.74	0.71	0.76	0.053
Ia	10	2.26	1.53	2.90	3.53	3.28	3.87	0.002
V_vi (mm³ mm⁻³)	10	0.19	0.17	0.25	0.25	0.23	0.29	0.048
N_vc (mm⁻³)	5	101914	101106	103339	138442	106958	148525	0.117
V_vc (mm³ mm⁻³)	5	0.028	0.025	0.032	0.038	0.038	0.047	0.037

V_ve, V_vk, V_vf, V_vi and V_vc represent, respectively,the volume density of: follicular epithelium, colloid, follicles,interfollicular connective tissue and capillaries. IA, thyroid activation index; N_vc, numerical density of capillaries; N, number of observations.

Mann-Whitney U-test.

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