ELISA kits for the study of the target, RTN-X are available in ready-to-use formats. The protein is also known as reticulon 4 or RTN4. It is a 1192-residue protein with a membrane localization. In addition, up to 6 isoforms have been discovered. Other alias names for this target include: reticulon 5, neuroendocrine-specific protein C homolog, neurite growth inhibitor 220, foocen, My043 protein, and Human NogoA, and NI220/250.