c-Met, the product of c-met gene has been reported to be the HGF receptor since HGF induces phosphorylation of c-Met by binding specifically to it. It is a heterodimer protein composed of an α-chain that is linked to a β-chain. The β-chain consists of the intracellular tyrosine kinase domain, the transmembrane domain and the extracellular domain, and it is tied into the α-chain that is the extracellular domain of c-Met. c-Met exists mainly in epidermal cells. It is found in the digestive tract, prostate gland, seminal vesicles, mammary gland, microglia cells, monocytes and macrophages, and higher amounts in the liver and kidney. It is considered that c-Met transmits signals resulting from binding to HGF, such as growth, motility and organ formation in the organs and cells mentioned above. This kit is designed to measure human c-Met.