The ELISA kits listed below target CD28, the symbol for the human gene, CD28 molecule. The protein encoded by CD28 has a predicted amino acid length of 220, a mass of 25.1 kDa, and a membrane subcellular localization. There are currently 7 reported isoforms, as well as sites of glycosylation. CD28 may also be known by the following names: Tp44, CD28 antigen, and T-cell-specific surface glycoprotein CD28. Orthologs of the gene, including human, mouse, rat, bovine, chicken, primate, guinea pig, and other mammalian are available targets of several ELISA kits.