Mouse Strain information
APB ID 3341
Added 20/06/2008
Last Edited 11/05/2014
Strain name: CBA/Ca-Tg(CD2-Il5)5C1Ldt/Apb [cc]
Nickname: CBA/Ca Tg(IL5)C1
Strain designation name: CBA/Ca-Tg(CD2-Il5)5C1Ldt/Apb [cc]
Strain Types Mutant strain
Genetic Details Transgenic
Mode of Inheritance Recessive
1.   Transgene: transgene insertion 5C1, Lindsay A Dent  
Mutant Construction Technique None
Phenotype Homozygous State Do not maintain as homozygotes. While this is apparently possible, survival of homozygotes likely to be lower.
Phenotype Heterozygous State Appear normal with peripheral blood eosinophilia and increased numbers of eosinophils in the spleen (with splenomegaly), bone marrow. Heterozygous BALB/c and C57BL/6 IL-5 Tg2 mice are resistant to methylcholanthrene-induced carcinogenesis - see Simson, L, et al., 2007, Regulation of carcinogenesis by IL-5 and CCL11: a potential role for eosinophils in tumor immune surveillance. J. Immunol., 178:4222-4229.
Original Genetic Background CBA/Ca
Genetic Background Currently Maintained CBA/Ca
Coat Colour Agouti
Eye Colour Black
Strain identification
How is this strain characterised? Phenotyping
Characteristics Assayed For Routinely phenotype IL-5 Tg mice by counting cells from tail blood smears, with eosinophils being the predominant cell type present if the mouse is IL-5 Tg. All mice that will be sent for preservation have been identified as IL-5 Tg through a blood smear taken at weaning and then again a few weeks later to confirm the IL-5 Tg status. We do not usually use PCR.
Fertility and Strain maintenance
Fertility and Strain maintenance
Relevant bibliographic / database references
Strain Specific References
Other Related References
General information
Associated IP rights? No
Does it Model a Human Condition? Yes
Research value of this Strain Hypereosinophilia, atopy, allergy, asthma, parasite infection, cancer
Applicable Research Areas Immunology and inflammation
Models for human disease
Developmental biology
Cell biology
  • eosinophil
  • asthma
  • resistance to helminthic parasites
  • allergy
  • immune surveillance
Additional Information IL-5 Tg mice have enhanced resistance to some parasitic helminths (Nippostrongylus brasiliensis, Strongyloides ratti), but not to others (Schistosoma mansoni, Trichinella spiralis, Toxocara canis). Expression of the IL-5 Tg on CBA/Ca, C57BL/6 and BALB/c genetic backgrounds enhances the immunopathology of aeroallergen-induced lung inflammation, but the CBA/Ca mice are relatively resistant to development of several aspects of the disease. Mammary tissue development is temporarily retarded in IL-5 Tg mice.
Is the strain available in any form to other researchers Yes
APB stock stored as: Cryopreserved sperm (from 10 mice)

APB stock genotyped verified by: Unverified
Are live mice available? No
MTA needs to be signed? Yes



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