Biological Activity Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using serum free human MCF-7 cells is less than 2 ng/ml, corresponding to a specific activity of > 5.0 × 105 IU/mg. Physical Appearance Sterile Filtered White lyophilized (freeze-dried) powder. Formulation Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.0.
上海普欣生物技术有限公司
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