integument
• from 1 to 4 weeks of age, pelage hairs exhibit waviness, disorganized medulla, irregular melanin piles, and wavy cuticles
• pelage hair defects are less severe after the start of the anagen phase of the first hair cycle
• however, mice do not develop alopecia
|
• irregular melanin piles
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matted coat
(
J:177192
)
waved hair
(
J:177192
)
• wavy
|
• disorganized
|
• the inner root sheath (IRS) is irregularly shaped with discontinuous Henle's layer and protruding Huxley's layer into the outer root sheath
• however, IRS length is normal
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pigmentation
• irregular melanin piles
|