Homozygous: adults are virtually nude except for vibrissae and sensitive hairs which exist as short stumps. Some individuals have normal shaped, but short vibrissae. The trait can be detected in newborn deer mice by the twisted appearance of the vibrissae. Animals begin to lose hair about twelve days of age, following a period during which the coat has a distinctive sheen. Juveniles have dark pigmented bodies with pink faces. Transient coats appear at subadult and adult molts. The deer mice are most readily distinguished from hairless-1 by the absence of elongate claws. Scanning electromicroscopy reveals many hairs that are abnormally twisted or bilobar, and that are fragile and readily break off at the skin surface. Ears of homozygous hairless-2 deer mice are abnormally thin and there is a general reduction in body weight.
Heterozygous: hairless-2 deer mice have full pelage, but the coat has a greasy texture.
Heterozygous (hr-2/+) are the same as wild-type.
Male mice were obtained from the Peromyscus Genetic Stock Center as part of a long term project to develop cropreservation techniques for Peromyscus. Sperm have been cryopreserved and are available. However, cryorecovery techniques have yet to be developed.
Distribution of this strain requires submission of the MMRRC Conditions of Use (COU). A link to the COU web form will be provided via email after an order has been placed; the form should be completed then or the email forwarded to your institutional official for completion.