The R4 ELISA kits listed below utilize specific antibodies for the plate-based assay of R4 in various samples. R4 is another term for the CD1A gene, which encodes the protein, CD1a molecule in humans. It has been reported that R4 plays a role in adaptive immune responses, among other functions. Structurally, the CD1A protein is described to be 327 amino acid residues in length and 37.1 kilodaltons in mass. It is localized to the cell membrane of the cell. In terms of tissue specificity, it is noted to be expressed on cortical thymocytes, epidermal Langerhans cells, dendritic cells, on certain T-cell leukemias, and in various other tissues. This protein is known to be glycosylated. Other names for this target antigen include CD1, FCB6, and HTA1. Click on the following ELISA kits for more detailed information, including target reactivity and assay sensitivity.