Table 2. Comparison of the parameters of the hair follicles of the Hetian sheep.

Hair follicle parameters	Sheep of high wool density (n = 3)	Sheep of low wool density (n = 3)
The total density of the hair follicles (per mm2)	39.82±2.40**	31.95±2.04
The density of the primary hair follicles (per mm2)	6.04±0.56	6.02±0.43
The density of the secondary hair follicles (per mm2)	33.79±2.30**	25.93±1.90
The ratio of the secondary hair follicles to primary hair follicles	5.64±0.64**	4.32±0.40

**P < 0.01 and

* P < 0.05