The Binding Activity of Human CEACAM1 with Anti-CEACAM1 recombinant antibody. Activity: Measured by its binding ability in a functional ELISA. Immobilized Human CEACAM1 at 2 μg/mL can bind Anti-CEACAM1 recombinant antibody(CSB-RA005157MA1HU). The EC<sub>50</sub> is 3.432 - 6.079 ng/mL.