Serum from sexually mature, female donor cynomolgus monkeys that are free of common parasites. Animal was fasted prior to collection.||Appearance:|Supplied as an amber liquid||pH: 7.0||Storage and Stability:|For long-term storage, aliquot and store at -20°C or colder. Aliquots are stable for 6 months at -20°C. Avoid multiple freeze-thaw cycles. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.