Biological Activity

Fully biologically active when compared to standard. The biological activity determined by a chemotaxis bioassay using human T-lymphocytes is in a concentration range of 1.0-10 ng/ml.
Physical Appearance

Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation

Lyophilized from a 0.2 μm filtered concentrated solution in 20 mM PB, 300 mM NaCl, pH 7.4, with 0.02 % Tween-20.

Endotoxin

Less than 0.1 EU/μg of rRhTARC/CCL17 as determined by LAL method.