Introduction
Antibodies, also known as immunoglobulins that are used by the immune system against the infiltration of pathogens. The affinity of antibodies measured by immunofluorescence is commonly used in a selection of biosimilar products in the pharmaceutical industry to analyze the effectivity of the monoclonal antibody. Currently, quantification of the affinity of antibodies is analyzed by flow cytometry. Countstar Rigel also can provide a quick and easy way to evaluate the affinity of antibodies.