Creative BioMart provides quality recombinant proteins, diagnostic antibodies and antigens, diagnostic enzymes and pharmaceutical enzymes to the research community of biology, clinical research, molecular diagnostics and biopharmaceutical drug development.Use a manualdefrost freezer and avoid repeated freeze-thaw cycles. 12 months from date ofreceipt, -20 to -70℃ as supplied. 1 month, 2 to 8 ℃ under sterileconditions after reconstitution. 3 months, -20 to -70℃ under sterileconditions after reconstitution.https://www.creativebiomart.net/active-recombinant-mouse-glial-cell-line-derived-neurotrophic-factor-family-receptor-alpha-3-his-tagged-and-fc-tagged-107191.htm