Strain Name:
Stock Number:
Citation ID:
Other Names:
Gt(ROSA)26{tm4Mgn}, ROSA26{EN.YFP}

Strain Information

Name: gene trap ROSA 26, Philippe Soriano; targeted mutation 4, Mark A Magnuson
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 6
Alteration at locus: Targeted Mutation
Name: gene trap ROSA 26, Philippe Soriano
Synonyms: ROSA26, beta geo, Gtrgeo26, Gtrosa26, R26, Thumpd3as1
Type: Gene
Species: Mus musculus (mouse)
Chromosome: 6
Alteration at locus: Targeted Mutation
NCBI: 14910
Genetic Alterations
The coding sequences for a yellow (YFP) fluorescent protein gene were inserted into the ROSA26 gene locus in mESCs using a previously targeted mESC line containing a loxed cassette acceptor allele and the method of recombinase mediated cassette exchange (RMCE).
Genotype Determination
ES Cell Line

Homozygous: None.

Heterozygous: This mouse expresses yellow fluorescent protein (YFP) under control of the endogenous ROSA26 gene locus.

Strain Development
Rosa26(YFP)Mgn is from a mixed genetic background of both 129S6 and C57BL/6J. Three backcrosses have been performed with plans for more matings before line submission. Donor reported that mice shipped to MMRRC strain were 93.75% congenic on C57BL/6J by SNP analysis. Sperm was cryo-archived from these mice.
Suggested Control Mice
Wild-type littermates
MMRRC Genetic QC Summary
The MMRRC Centers have developed a genetic QC pipeline using MiniMUGA array genotyping to provide additional information on strain backgrounds for MMRRC congenic and inbred strains. For more information on when data may be available, or to request genotyping for a strain of interest, please contact Older strains may not have this information.
  • Apoptosis
  • Cancer
  • Cardiovascular
  • Cell Biology
  • Dermatology
  • Developmental Biology
  • Diabetes/Obesity
  • Endocrine Deficiency
  • Hematology
  • Immunology and Inflammation
  • Internal Organ
  • Metabolism
  • Models for Human Disease
  • Neurobiology
  • Reproduction
  • Research Tools
  • Sensorineural
  • Virology
Mark Magnuson, M.D., Vanderbilt University.
Primary Reference
Chen SX, Osipovich AB, Potter LA, Hipkens S, Gangula R, Yuan W, Piston DW, Magnuson MA. Quantification of factors influencing fluorescent proteinexpression using RMCE to generate an allelic series in the ROSA26 locus in mice. Dis Model Mech 2011 Jul; 4(4);537-47. Epub 2011 Feb 14. (Mediline PMID: 21324933).

Colony and Husbandry Information

Colony Surveillance Program and Current Health Reports

Mice recovered from a cryo-archive will have health surveillance performed on recipient females. Health reports will be provided prior to shipment. If you require additional health status information, please email .
Coat Color
Yellow fluorescent protein is visible in neonates.
MMRRC Breeding System
Breeding Scheme(s)

C57BL/6J female x Heterozygous male or reciprocal mating

N4, Donor reported that this strain was 93.75% congenic on C57BL/6J by SNP analysis.
Overall Breeding Performance
Viability and Fertility: Female Male Comments
Homozygotes are viable: Yes Yes
Homozygotes are fertile: Yes Yes
Heterozygotes are fertile: Yes Yes
Age Reproductive Decline: Unknown Unknown
Recommended wean age
3 weeks

Order Request Information

Limited quantities of breeder mice (recovered litter) are available from a cryoarchive; recovered litter usually available to ship in 3 to 4 months.

Cryopreserved material may be available upon request, please inquire to for more information.

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.

The donor or their institution limits the distribution to non-profit institutions only.

Additional charges may apply for any special requests. Shipping costs are in addition to the basic distribution/resuscitation fees. Information on shipping costs and any additional charges will be provided by the supplying MMRRC facility.

Click button to Request this one strain. (Use the MMRRC Catalog Search to request more than one strain.)
MMRRC Item # Description Distribution Fee / Unit (US $)
*Shipping & Handling not included*
Units Notes
036289-MU-SPERM Cryo-preserved spermatozoa $437.00 / Non-Profit Aliquot Approximate quantity3
036289-MU-RESUS Litter recovered from cryo-archive $2,624.00 / Non-Profit Litter Recovered litter4; additional fees for any special requests.
Cryopreserved material may be available upon request, please inquire to for more information.

3 An aliquot is one straw or vial with sufficient sperm to recover at least one litter of mice, as per provided protocols, when performed at the MMRRC facility. The MMRRC makes no guarantee concerning the success of these procedures when performed outside the MMRRC facilities.

4 The distribution fee covers the expense of resuscitating mice from the cryo-archive; you will receive the resulting litter. The litter will contain at minimum one mutant carrier; the actual number of animals and the gender and genotype ratios will vary. (Typically, multiple breeder pairs can be established from the recovered litter.) Prior to shipment, the MMRRC will provide information about the animals recovered. If you anticipate or find that you need to request specific genotypes, genders or quantities of mice in excess of what is likely from a resuscitated litter, you may discuss available options and pricing with the supplying MMRRC facility.

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.