– Axl, a member of the TAM (Tyro3, Axl, Mer) family, and its inhibitors can specifically break the kinase signaling nodes, allowing advanced patients to regain drug sensitivity with improved therapeutic efficacy. Overexpression and activation of Axl receptor tyrosine kinase have been widely accepted to promote cell proliferation, chemotherapy resistance, invasion, and metastasis in several human cancers, such as lung, breast, and pancreatic cancers. AXL Protein (Primary Amine Labeling), Human, Recombinant (hFc), Biotinylated is expressed in HEK293 mammalian cells with C-hFc tag. The predicted molecular weight is 72.6 kDa and the accession number is P30530-1.