Donkey Serum is used as a supplement to cell culture media. Donkey Serum provides a broad spectrum of macromolecules, carrier proteins for lipoid substances and trace elements, attachment and spreading factors, low molecular weight nutrients, and hormones and growth factors that promote cell growth and health. Be certain to maintain Good Cell Culture Practice, and maintain sterility of cultures that require media supplementation.Synonyms: Donkey serum for cell culture, cell culture grade donkey serum, sterile serum from donkey.