Table 2.

Structural features of hair follicles during the hair cycle in yak.

Stage	Medulla	Brush end	IRS	Follicle bulb	ORS	Hair germ
Telogen	A	P	A	A	P	P
Anagen	P/A	P/A	P	P	P	A
Catagen	A	P/A	P/A	P/A	P/A	P/A

Letters represent whether a feature was always present (P), always absent (A), or sometimes present (P/A).