Strain Name:
Stock Number:
Citation ID:
Major Collection:

Gene Information

Genotype Determination
Mature deer mice have no hair except vibrissae and sometimes scattered body hairs. The trait can be recognized when animals begin to shed the first coat, about two or three weeks of age. The claws tend to elongate and assume a spiral twist. The skin becomes somewhat corrugated in many instances.
Strain Development
Source: 1918 and 1921. Scripps Institution. Hairless had an independent appearance among two separate lines of descent of P.m. gambelii. The first appeared from a normal wild-caught female mated to her cage-bred normal offspring. The second appeared among offspring of albino and yellowing mutant stocks unrelated to the lines which produced the first hairless.
Primary Reference

For more information, please see Hairless-1 on the Peromyscus Genetic Stock Center website.

Colony and Husbandry Information

Colony Surveillance Program and Current Health Reports

For more information about this colony's health status contact
Coat Color
Homozygous (hr-1/hr-1) have no hair except vibrissae

Heterozygous (hr-1/+)are the same a wild-type.

MMRRC Breeding System
Not applicable; only cryopreserved sperm is available. The parent colony was sufficiently large to use a random breeding scheme
Breeding Scheme(s)
Not applicable; only cryopreserved sperm is available; mice cryorecovered (see below) can be bred Wild-type female x Wild-type male
Overall Breeding Performance
Peromyscus mice breed best in a 16:8 light / dark cycle.
Average litter size
Recommended wean age
25 days

Order Request Information

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.

- Products for this strain are Not Yet Available for Ordering
- If you register interest in this strain, you will be notified when it becomes available for ordering.

To request material from the MMRRC: Please fill out our on-line request form (accessible from the catalog search results page, or click the Request this Strain button in the fees section). If you have questions or need assistance completing this form, you may call Customer Service at (800) 910-2291 (in USA or Canada) or (530) 757-5710 (international calls). Before you call, please have with you: the MMRRC item number, quantity needed, Bill-to and Ship-to contact information.