Store the lyophilized protein at -20℃ to -80℃ for long term. After reconstitution, the protein solution is stable at -20℃ for 3 months, at 2-8℃ for up to 1 week.or This product is stable at <= -70℃ for up to 6 months from the date of receipt. For optimal storage, aliquot into smaller quantities after centrifugation and 推荐保存在recommended temperature. Aliquot to avoid repeated freezing and thawing.