Determined by the dose-dependent co-stimulation (with murine IL-4) of MC/9 cells. The ED50 was found to be ≤ 2 ng/ml, corresponding to a specific activity of ≥ 5 x 105 units/mg.
Determined by the dose-dependent co-stimulation (with murine IL-4) of MC/9 cells. The ED50 was found to be ≤ 2 ng/ml, corresponding to a specific activity of ≥ 5 x 105 units/mg.
Fully biologically active when compared to standard. The ED50 as determined by the dose-dependant stimulation of the proliferation of murine B9-11 was found to be less than 1 ng/ml, corresponding to a specific activity of >1 x 107 IU/mg.
Determined by the dose-dependent co-stimulation (with murine IL-4) of MC/9 cells. The ED50 was found to be ≤ 2 ng/ml, corresponding to a specific activity of ≥ 5 x 105 units/mg.