Cell Sciences' Mouse Anti-Human CD21/CR2 Clone B-E5 mAb is a Mouse monoclonal antibody. The Mouse Anti-Human CD21/CR2 Clone B-E5 mAb Antibody was generated using Cr2 as the antigen. It reacts with Homo Sapiens, and Human. This antibody has been shown to work in applications such as: Flow Cytometry, and Immunohistochemistry.