Description_x000D_ General description_x000D_ The Human Axl ELISA (Enzyme-Linked Immunosorbent Assay) kit is an in vitro enzyme-linked immunosorbent assay for the quantitative measurement of human Axl in serum, plasma, cell culture supernatants and urine._x000D_ Immunogen_x000D_ Recombinant Human Axl_x000D_ Application_x000D_ For research use only. Not for use in diagnostic procedures._x000D_ Please refer to the attached General ELISA KIT Procedure (sandwich, competitive & Indirect ELISA)_x000D_ Biochem/physiol Actions_x000D_ AXL receptor tyrosine kinase (AXL) is a receptor for growth arrest-specific protein 6 (GAS6). Along with GAS6, it is involved in the GAS6/AXL signaling pathway which has a role in the acidification-mediated anti-apoptotic effect on endothelial cells. AXL also has a role in interleukin-15-induced human natural killer development from CD34+ hematopoietic progenitor cells (HPCs). This protein is upregulated in several cancers._x000D_ Other Notes_x000D_ A sample Certificate of Analysis is available for this product._x000D_ Please type the word sample in the text box provided for lot number.