Anti-CD349 antibodies enable researchers to detect and measure the CD349 antigen in biological samples. This target is a reported synonym of the FZD9 gene, which encodes frizzled class receptor 9. This protein is known to function in B cell differentiation and the Wnt signaling pathway, among other biological roles. The human version of CD349 has a canonical amino acid length of 591 residues and a protein mass of 64.5 kilodaltons. It is reported to be localized in the cell membrane of cells. This target antigen may also be known as FZD3.