Determined by its ability to chemoattract murine lymphocytes using a concentration range of 10-100 ng/ml.
SDS-PAGE Activity assay The optimal working dilution should be determined by the end user.
Lyophilized from solutions contain no sodiun azide nor carrier protein.
Store at -20°C. Reconstitute in water to a concentration of 0.1-1.0 mg/mL. Do not vortex. For extended storage, it is recommended to be further diluted in buffer containing carrier protein (e.g. 0.1% BSA) and stored in aliquots at -20°C to -80°C.