About Us_Located in Napa Valley


Our mission is to contribute to the scientific pursuit of human wellness while upholding our core values of animal health and welfare. Josman, LLC has been an antibody production company since 1985. We are proud to be a part of the global health community by providing critical support to universities, biotech companies, and pharmaceutical companies in their vaccine, cancer, and drug research. Our dedicated research team is committed to providing high quality, cost-effective, and fast turnaround service in a professional and friendly environment.

Josman, LLC is a licensed research facility through the USDA, number 93-R-0260.


At Josman LLC, our animals are a part of our family, and we wouldn’t have it any other way. We believe animal testing for scientific purpose and the ethical care of animals are compatible goals. A healthy, stress-free animal with a robust immune system is critical to the success of your antibody production research.

Our facility utilizes an Institutional Animal Care and Use Committee (IACUC) which reviews animal protocols to ensure proper regulatory and human care is provided.


  • Small project management team ensures consistency, quality, flexibility and communication throughout your antibody research
  • Availability of diverse host species
  • Approved standard protocols in place for immediate start
  • Custom protocols available for tailored research
  • Our animals enjoy unparalleled care on the Josman Family Ranch in Napa, CA.