The CD20 / MS4A1 (B-Cell Marker) Antibody from MyBioSource.com is a Mouse Monoclonal antibody to MS4A1. This antibody recognizes Human antigen. The CD20 / MS4A1 (B-Cell Marker) Antibody has been shown to work in the following applications: Flow Cytometry, Immunofluorescence, Immunohistochemistry, and Immunohistochemistry - fixed.