Detects human Chitinase3-like 1 in ELISAs andWestern blots. In Western blots,approximately 50% cross-reactivity with recombinant mouse Chitinase 3-like 1 is observed.CHI3L1, also known as HCgp39 (human cartilage glycoprotein 39) and YKL40, is a secreted glycoprotein belonging to the family of chitinase-like lectins. These proteins are structurally related to the glycosylhydrolase family 18, but lack enzymatic activity. CHI3L1 is expressed by chondrocytes, synovial cells, macrophages and neutrophils. It has been found to play a role in down-regulating cytokine-induced inflammatory responses.Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution. *   http://www.creative-diagnostics.com/Anti-CHI3L1-PAb-Biotin-Conjugated-187168-177.htm