Midkine Recombinant Protein

Biological activity was determined by its ability to chemoattract human neutrophils using a concentration range of 10-100 ng/mL. Endotoxin level is less than 0.1 ng per μg (1EU/μg) .

The lyophilized Midkine recombinant protein is stable for at least 2 years from date of receipt at -20°C. Reconstituted Midkine stable for at least 3 months when stored in working aliquots with a carrier protein at -20°C. As with any protein, exposing Midkine recombinant protein to repeated freeze / thaw cycles is not recommended. When working with proteins care should be taken to keep recombinant protein at a cool and stable temperature.