...five human isotypes. Some isotypes naturally form multi-antibody units, while others exist as monomers. ...antibody in assays with multiple targets, and is described in more detail in the Multiplex Assays section below...differentiation between multiple antibodies. They are often used in assays that have multiple proteins to detect... controls. Multiplex Assays Flow cytometry, IF, IHC, and ICC are typically run as multiplex assays. Both...Methods Visualization Methods Cell Sorting Methods Multiplex Assays Selection Validation Affinity reagents ...allows for the amplification of signals by having multiple secondary antibodies binding to a primary antibody..., which is typically the number of antibodies multiplied by two, as each antibody has two binding sites...