Ready-to-use ELISA kits are available for the detection of c-ErbB2, an alias of the protein, erb-b2 receptor tyrosine kinase 2. The official gene symbol is ERBB2. The kits can detect several species variants of the protein, including: human. The protein, with a mass of 137.9 kDa and length of 1255 residues, is reported to be cytoplasmic, nuclear and membrane-associated. It is a member of the Protein kinase superfamily, Tyr protein kinase family, EGF receptor subfamily and may be known by other names, including: neuroblastoma/glioblastoma derived oncogene homolog, neuro/glioblastoma derived oncogene homolog, human epidermal growth factor receptor 2, herstatin, c-erb B2/neu protein, and receptor tyrosine-protein kinase erbB-2, and proto-oncogene Neu.