Human IL-21 Protein, His tag (Animal-Free)

Lyophilized protein should be stored at -20 degree C for 1 year. Upon reconstitution, store at 2 degree C to 8 degree C for up to 1 week. Further dilute in a buffer containing a carrier protein or stabilizer (e.g. 0.1% BSA, 10%FBS, 5%HSA or 5% trehalose solution), protein aliquots should be stored at -20 degree C or -80 degree C for 3-6 months. Avoid repeated freeze/thaw cycles.