integument
• hair breakage and regeneration is not uniform so mice are mosaic for bare and haired patches
|
brittle hair
(
J:14908
)
• hair begins to break at 10 to 14 days due to incomplete keratinization
• hair breakage and regeneration occurs in cycles
|
• hair shafts have a deficiency in or entirely lack a cuticle
(J:30359)
|
• may be deficient or absent
|
• dermal-epidermal recombination experiments indicated that the epidermis of this mutant is abnormal
• one or more weak places result in breakage or longitudinal fissures
|