Anti-CD307b antibodies are used in antigen-specific immunodetection in biological samples. The target CD307b is a known alias name of the protein Fc receptor like 2, encoded by the FCRL2 gene in humans. This 508-amino acid residue protein is believed to have an regulatory role in normal and neoplastic B cell development. It is localized to the cell membrane of the cell and features O-glycosylated and phosphorylated post-translational modifications. In terms of tissue expression, it is reported to be expressed in the secondary lymphoid organs, spleen and lymph node.