Ready-to-use ELISA kits are available for the detection of T cell leukemia, homeobox 1, an alias of the protein, T cell leukemia homeobox 1. The official gene symbol is TLX1. The protein, with a mass of 34.4 kDa and length of 330 residues, is reported to be nuclear. It may be known by other names, including: TCL3, HOX11, homeobox protein Hox-11, homeo box-11 (T-cell leukemia-3 associated breakpoint homologous to Drosophila Notch), T-cell leukemia/lymphoma protein 3, and T-cell leukemia homeobox protein 1.