ELISA kits for the study of the target, T-box 1 are available in ready-to-use formats. The protein is also known as T-box transcription factor 1 or TBX1. It is a 398-residue protein with a nuclear localization. In addition, up to 3 isoforms have been discovered. Other alias names for this target include: CTHM, CATCH22, brachyury, Testis-specific T-box protein, T-box 1 transcription factor C, and T-box transcription factor TBX1, and DGS. ELISA suppliers report species reactivity to the following: human and mouse.