Rabbit Anti-Human CD21 Monoclonal Antibody (Clone SP199)

CD21 antigen, also known as complement receptor type 2 (CR2), is a glycoprotein and a receptor for the C3d fragment of complement component 3. It is predominantly expressed in follicular dendritic cells and B lymphocytes. CD21 binds to CD19, and CD81 to form a B cell complex on mature B cells and enhances the B cell response to antigen through C3d.

Figure above:
Human tonsil stained with anti-CD21 antibody

Contents

Rabbit monoclonal antibody purified by protein A/G in PBS/1% BSA buffer pH 7.6 with less than 0.1% sodium azide.