Fully biologically active when compared to standard. Determined by its ability to chemoattract human peripheral blood eosinophils using a concentration range of 50.0 -100.0 ng/ml, corresponding to a Specific Activity of >1 x 104 IU/mg.
Fully biologically active when compared to standard. Determined by its ability to chemoattract human peripheral blood eosinophils using a concentration range of 50.0 -100.0 ng/ml, corresponding to a Specific Activity of >1 x 104 IU/mg.
Fully biologically active when compared to standard. Measured by its ability to chemoattract mouse CCR3 transfected BaF3 mouse pro-B cells.The ED50 for this effect is typically 1-5 ng/mL, corresponding to a Specific Activity of >2 x 105 IU/mg.
Fully biologically active when compared to standard. Determined by its ability to chemoattract human peripheral blood eosinophils using a concentration range of 50.0 -100.0 ng/ml, corresponding to a Specific Activity of >1 x 104 IU/mg.