Anti-CD20 antibodies are essential reagents in flow cytometry for detecting the protein encoded by the MS4A1 gene. CD20, an alias name for the protein, 'membrane spanning 4-domains A1', is expressed on the surface of B cells. In research settings, CD20 antibodies are used to study B-cell development, function, and response to various treatments. They are also used in immunophenotyping to characterize different subsets of B cells. Examine the supplier's provided validation data when comparing CD20 antibodies for flow cytometry. Also look for application-specific recommendations, such as dilutions, protocols, sample types, and other helpful usage notes.