The Jackson Laboratory

Rederivation & Strain Rescue Services

Accelerate, protect, and restore your mouse lines with JAX's comprehensive assisted reproductive and rescue services. Whether you need to cleanse a strain of pathogens, maintain complex genotypes, or recover a colony at risk of extinction, JAX delivers high-health-status animals supported by world-leading reproductive science.

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The Jackson Laboratory - Rederivation & Strain Rescue Services

IVF Sperm and Embryo Rederivation Services

Quickly restore your mouse line to high health status. JAX performs IVF sperm rederivation and embryo rederivation to remove viruses, bacteria, and parasites and deliver SOPF/SPF offspring with full health reports, typically in ~12-15 weeks. These services are used to import external lines, clear quarantine requirements, recover a strain after pathogen detection, or standardize health status across sites for reproducible studies.

Our Standard IVF Rederivation Service (sperm rederivation) requires only two males from your colony. Should you need additional animals, this service can be easily scaled to produce large numbers of offspring.

Our Custom Rederivation Service can receive both males and females from your colony, but if you are not in the position to provide the number of mice in the age ranges required for rederivation, we can provide breeding services to expand colonies and produce the mice needed. Upon request, genotyping services can be added for an additional fee.

  • High health deliverables: SOPF/SPF animals with documented health status for barrier entry
  • Fast turnaround: Typical completion in ~12-15 weeks
  • Optimized for any line type: IVF or embryo rederivation options ensure the right fit for single allele, multiallelic, rare, or challenging backgrounds
  • Resource efficient: Standard IVF projects require minimal donor animals, reducing pressure on small or aging colonies
  • Expert end-to-end project management: Dedicated JAX teams coordinate donor receipt, rederivation, health testing, and optional services like genotyping or cryopreservation

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 Standard IVF RederivationSpeed Congenic
Ideal For
  • Strains carrying a single allele of interest on commonly available inbred backgrounds
  • Strains with: more than one allele of interest
  • Maintaining homozygosity
  • Strains on backgrounds where it would not be appropriate to use females from a common inbred strain
Requirements2+ males of the same genotype
8-16 weeks of age
Females provided by JAX
2+ male mice and 8-12 female mice from your colony
DeliverableAt least 8 pups. Health report is included.At least 2 pair of mice. Health report included.
Estimated Timeline12-15 weeks12-15 weeks

Strain Rescue

Save endangered mouse lines, restore breeding and protect irreplaceable genetics. JAX Strain Rescue is a focused, rapid-response service for colonies threatened by age, breeding cessation, or poor health. We apply our nearly 100 years of experience and advanced assisted reproductive technologies to recover viable animals and secure your model's future.

Our team has rescued over 150 mouse strains from extinction due to breeding cessation or health issues. If your mouse colonies have ceased reproducing or are threatened by health or other issues, JAX may be able to help.

Recover your failing strain with JAX

  • Purpose-built for failing lines: Dedicated processes designed to maximize the odds of restoring viable breeders
  • Expert Comprehensive Techniques: IVF, embryo culture/transfer, oocyte collection, sperm collection/cryopreservation, ovary transplant, and hysterectomy derivation
  • Proven outcomes: JAX has rescued 150+ strains, with a success rate over 80%
  • High-health delivery: Recovered mice are returned at SOPF status

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ServiceStrain Rescue
Ideal ForDesigned to rescue small colonies threatened by age, breeding cessation or poor health
Requirements2+ male carrier mice, 9-18 months old from your colony
DeliverableAll recovered pups, recovered at a SOPF status
Estimated Timeline12-15 weeks

Discover More

Strategies To Minimize Genetic Drift And Maximize Experimental Reproducibility In Mouse Research

Genetic drift occurs in any independent mouse breeding colony and has the potential to negatively affect experimental reproducibility and scientific conclusions. Spontaneous mutations caused by genetic drift may go unrecognized for years, until the specific research questions that depend on such mutations happen to be addressed.

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JAX Whitepaper - Strategies To Minimize Genetic Drift And Maximize Experimental Reproducibility In Mouse Research
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