Germ-free Rederivation and Breeding

Given the presence of microbiota in SPF mice, it is hard to study the microbe-host interaction. To overcome this challenge, GemPharmatech has become the first to establish the germ-free embryo transfer technique in China. Nearly 20,000 germ-free strains can be obtained by sourcing KO or CKO strains from the GemPharmatech Knock Out All Project mouse strain library through our germ-free rederivation and breeding services.


  • Advanced purification technique: Our germ-free embryo transfer technique can eliminate microbial contamination and enhance purification.

  • Experienced technical team: Our yearly capacity is nearly 100 germ-free strains; a single batch of germ-free rederived progeny can meet the needs of multiple research projects.

  • Strict sterile environment: We have first-class sterile breeding facilities and strain management practices.

  • High success rate: Up to date, we have a 100% success rate in germ-free rederivation.



GemPharmatech is committed to protecting and respecting your privacy, and we'll only use your personal information to administer your account and to provide the products and services you requested from us. From time to time, we would like to contact you about our products and services, as well as other content that may be of interest to you. If you consent to us contacting you for this purpose, please click below to say how you would like us to contact you:

In order to provide you with the content requested, we need to store and process your personal data. If you consent to us storing your personal data for this purpose, please click the checkbox below.

You can unsubscribe from these communications at any time. For more information on how to unsubscribe, our privacy practices, and how we are committed to protecting and respecting your privacy, please review our Privacy Policy.