Anti-DEFB29 antibodies are used in antigen-specific immunodetection in biological samples. The target DEFB29 is a known alias name of the protein defensin beta 129, encoded by the DEFB129 gene in humans. This 183-amino acid residue protein is reported to exhibit antibacterial activity. The protein is secreted and features post-translational modifications. In terms of tissue expression, it is notably expressed in the testis.