Anti-HB4 antibodies enable researchers to detect and measure the HB4 antigen in biological samples. This target is a reported synonym of the KRT84 gene, which encodes keratin 84. This protein is known to function in hair follicle development and the regulation of cell differentiation, among other biological roles. The human version of HB4 has a canonical amino acid length of 600 residues and a protein mass of 64.8 kilodaltons. It is reported to be notably expressed in the skin. Other names for this target antigen include KRTHB4 and keratin, type II cuticular Hb4. Indicated applications for HB4 antibodies listed below include ELISA and Western Blot.