X-Vivo10 is a defined serum-free medium specifically optimized for high-density culture and expansion of human immune cells, such as T cells and NK cells. Its formulation excludes serum and any animal-derived components, effectively mitigating risks of exogenous pathogen contamination. Through precise supplementation of essential nutrients, vitamins, and growth factors, it provides a stable and consistent nutritional environment for the in vitro activation, proliferation, and long-term maintenance of immune cells. This significantly ensures the reliability and reproducibility of experimental results in cell therapy and immunology research.