The Binding Activity of Human OSM with Anti-OSM Recombinant Antibody. Activity: Measured by its binding ability in a functional ELISA. Immobilized Human OSM (CSB-MP017260HU1) at 2 μg/mL can bind Anti-OSM recombinant antibody, the EC<sub>50</sub> is 3.048-3.860 ng/mL.