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RRRC Rat Strains

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654 
ES cell line
Hongsheng Men 
 
561 
ES cell line
Hongsheng Men 
 
467 
ES cell line
Qi-Long Ying 
 
466 
ES cell line
Qi-Long Ying 
 
465 
ES cell Line
Qi-Long Ying 
 
464 
ES cell line
Qi-Long Ying 
 
654 
 
donor: Hongsheng Men
561 
 
donor: Hongsheng Men
467 
 
donor: Qi-Long Ying
466 
 
donor: Qi-Long Ying
465 
 
donor: Qi-Long Ying
464 
 
donor: Qi-Long Ying

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05.21.2026

Weather and Shipping

The welfare of the animals is of utmost importance and as we head into the summer months, inclement weather and excessive heat will delay/prevent shipments of live animals.  Be aware that hot temperatures between June and mid-September may negatively impact the ability of couriers to safely ship animals so please plan your live animal orders accordingly.

05.21.2026

Provide Your Input on NIH's Proposed Strategic Plan by May 26, 2026.

The NIH is currently seeking input for its next strategic plan, and a major focus of this framework involves the future of animal research. Because these high-level policies directly impact the future of the RRRC and your work, it’s crucial that the scientific community participates. The NIH has provided a short feedback form that only takes a few minutes to complete. Please consider submitting your input. URL: https://grants.nih.gov/news-events/nih-extramural-nexus-news/2026/03/nih-seeks-input-on-framework-for-next-nih-wide-strategic-plan   Comments must be submitted electronically through the submission website. Responses must be received on May 26, 2026, by 11:59:59 p.m. (ET). 

07.30.2025

Animal Models and New Approach Methodologies (NAMs)

NAMs are lab (e.g., organoids and iPSCs) or computer-based methods intended to expand our tools for modeling human biology and disease. While this field is rapidly evolving, the need for animal models remains, especially for situations where a complex biological system is necessary. In addition, animal models serve as vital in vivo controls for the validation and verification of emerging NAMs.