Horse Serum contains low trace metals and high protein versus Fetal Bovine Serum. It is collected from controlled donor herds fed a specific diet to maintain consistent serum chemistry. Suitable for use as a mycoplasma growth supplement, in diagnostic assays, and for culturing hematopoietic stem cells and neuronal cells. Virus Screened. Mycoplasma Tested. 0.2 Micron Filtered. 500 mL