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 freezethaw cycles. 12 months from date of receipt, -20 to -70℃ as supplied.1 month, 2 to 8℃ under sterile conditions after reconstitution. 3 months,-20 to -70℃ under sterile conditions after reconstitution.http://www.creativebiomart.net/description_107268_7.htm