An Egg-Based Alternative to FBS for all Cell Culture Workflows
YEX (Yolk Extract) is a fully GMP compliant growth supplement made from Specific Pathogen Free (SPF) eggs. It is formulated to be used in exactly the same way as FBS when culturing cells. It contains no serum proteins. It contains the ideal blend of protein, lipids, amino acids, vitamins, carbohydrates, and minimally essential growth factors. YEX contains no pathogens or contaminants such as bovine IgG or bovine DNA/RNA. YEX is a cost-effective, easy-to-use alternative to FBS.
Most importantly, YEX has no batch-to-batch variability. Every bottle is QC'd based on cell proliferation tests across HEK293, CHO, HeLa, and B16F10 cells. Certificate of Analysis (CoA) for each bottle sold comes with a guarantee of cell growth comparable to FBS (~10%). Have full confidence that you are using the best alternative to FBS that is easy to use and cost-effective.
Learn how YEX compares to FBS in terms of cell growth and morphology →YEX comes in two different formulations that match to any type of FBS. One for adherent cells and one for suspension cells.
Designed for consistent growth for robust cell lines (HEK293T, HeLa, CHO, etc.) used within all standard cell culture research applications. Also known as YEX-003, this formulation offers excellent value. Samples for research are available upon request.
Order YEX-003Designed for consistent growth for a broad range of cell lines for industrial-scaled cell growth. Also known as YEX-005, this formulation offers excellent value. Samples for research are available upon request.
Order YEX-005- Batch-to-batch variation does not apply to YEX because all batches are tested for cell growth and quality, so that you don't have to. Avoid onerous in-house testing on FBS samples.
- Never again will you need to hoard entire lots of FBS. Simply order what you need and save your precious -80°C storage space.
- Bovine contaminants such as bovine IgG are also absent in YEX. Perform antibody and recombinant protein purification with confidence knowing that these are no longer part of your processes.
YEX demonstrates consistent growth performance across adherent and suspension cell lines in oncology, biomanufacturing, and vaccine production models.
- YEX product is consistent because we perform extensive testing of all YEX on cell growth before any YEX is released.
- ISO 9001:2015 certification means that Quality Management Systems (QMS) can confidently adopt YEX into workflows.
- Our teams work with all users to ensure satisfaction by providing detailed protocols, SOPs and virtual troubleshooting.
Request a validation sample or speak with our team to discuss your cell culture application.
GMP Manufactured
SPF Egg Source
Lot-to-Lot Tested
No Bovine Contaminants