The Binding Activity of Human CCR5 with Anti-CCR5 Recombinant Antibody. Activity: Measured by its binding ability in a functional ELISA. Immobilized Human CCR5 (CSB-MP004844HU) at 10 μg/mL can bind Anti-CCR5 recombinant antibody. The EC<sub>50</sub> is 1.099-1.287 ng/mL.The VLPs (CSB-MP3838) is negative control.