Anti-ECRG2 antibodies enable researchers to detect and measure the ECRG2 antigen in biological samples. This target is a reported synonym of the SPINK7 gene, which encodes serine peptidase inhibitor Kazal type 7. This protein is known to function in inflammatory response pathways, among other biological roles. The human version of ECRG2 has a canonical amino acid length of 85 residues and a protein mass of 9.2 kilodaltons. It is reported to be a secreted protein that is notably expressed in many tissues, such as the colon, vagina, and cervix. Other names for this target antigen include serine protease inhibitor Kazal-type 7 and ECRG-2.