Guard hair

Guard hair

Hair Types and Subtypes in the Laboratory Mouse

Published in John P. Sundberg, Handbook of Mouse Mutations with Skin and Hair Abnormalities, 2020

Guard hairs are long, straight hairs that project above the level of the coat and comprise about 2% of the hairs. Dry6 proposed that these had a tactile function. Straile7,13 suggested that a subpopulation of guard hairs (tylotrich follicles), those with an annular complex surrounding the hair follicle, were the tactile hairs. Guard hairs have two rows of air cells (Figure 2B).

The Effects of Ischemia and Hyperoxygenation on Hair Growth and Cycle

View Article

Journal Information

Published in Organogenesis, 2020

Harunosuke Kato, Kahori Kinoshita, Natsumi Saito, Koji Kanayama, Masanori Mori, Natsumi Asahi, Ataru Sunaga, Katsutoshi Yoshizato, Satoshi Itami, Kotaro Yoshimura

C57BL/6JJcl mice have four types of body hair; guard, awl, auchen, and zigzag (Figure 2b). The guard hair type is the longest and straight, awl is short and straight, auchen has one bend, and zigzag has two bends. Hairs on the ischemic side were significantly shorter than those on the control side (Figure 2c). Guard hairs were 4,096 ± 127.9 µm (n = 7) on the control side and 3,504 ± 420.8 µm (n = 10) on the ischemic side (p = .0015). Awl hairs were 3,156 ± 261.0 µm (n = 21) on the control side and 2,642 ± 249.9 µm (n = 21) on the ischemic side (p = .000009). Auchen hairs were 2,683 ± 118.9 µm on the control side (n = 15) and 2,267 ± 130.1 µm on the ischemic side (n = 20) (p = .000003). Zigzag hairs were 2,574 ± 249.4 µm (n = 7) on the control side and 1,812 ± 512.2 µm (n = 7) on the ischemic side (p = .006).

Explore chapters and articles related to this topic

Hair Types and Subtypes in the Laboratory Mouse

The Effects of Ischemia and Hyperoxygenation on Hair Growth and Cycle