Table 2.

Data of the primary osteons’ vascular canals, Haversian canals and secondary osteons in adult male rats subchronic exposed to 5 mg of Na₂SeO₃/L and 40 mg of DZN/L in drinking water for 90 days (Se-DZN group) and control rats

	Group	N	Area	Perimeter	Max. diameter	Min. diameter
			(μm 2 )	(μm)	(μm)	(μm)
Primary osteons’ vascular canals	Control	218	397.3 ± 98.1	72.29 ± 8.95	12.89 ± 2.08	9.83 ± 1.58
	Se-DZN	206	466.0 ± 107.0	78.96 ± 10.31	14.26 ± 2.64	10.46 ± 1.47
	T-test		P < 0.05	P < 0.05	P < 0.05	P < 0.05
Haversian canals	Control	208	426.9 ± 119.2	74.47 ± 10.25	13.21 ± 2.16	10.24 ± 1.73
	Se-DZN	202	351.2 ± 69.3	67.54 ± 7.03	11.89 ± 1.69	9.44 ± 1.12
	T-test		P < 0.05	P < 0.05	P < 0.05	P < 0.05
Secondary osteons	Control	208	6541.0 ± 2012.6	291.79 ± 43.09	52.21 ± 8.61	39.38 ± 7.52
	Se-DZN	202	5623.8 ± 1772.8	268.23 ± 42.00	47.03 ± 8.61	37.49 ± 6.52
	T-test		P < 0.05	P < 0.05	P < 0.05	P < 0.05

N: Number of measured structures.