Anti-lectin, galactoside binding soluble 4 antibodies enable researchers to detect and measure the lectin, galactoside binding soluble 4 antigen in biological samples. This target is a reported synonym of the LGALS4 gene, which encodes galectin 4. This protein is known to function in cell adhesion, among other biological roles. The human version of lectin, galactoside binding soluble 4 has a canonical amino acid length of 323 residues and a protein mass of 35.9 kilodaltons. It is reported to be notably expressed in the rectum, gallbladder, duodenum, colon, and appendix. Other names for this target antigen include GAL4, GAL4, and L36LBP.