Labeled biotin to FCGRT&B2M Heterodimer Protein, Mouse, Recombinant (His Tag) by a certain molar ratio; Using the Octet RED System, the affinity constant (Kd) of FCGRT&B2M Heterodimer Protein, Mouse, Recombinant (His Tag), Biotinylated bound to IgG1 Antibody was 1.6 nM.