Chemokine (C-X-C motif) ligand 15 (CXCL15) is a small cytokine belonging to the CXC chemokine family that has been described in the mouse. This chemokine is also known under the name lungkine. CXCL15 is an ELR+ CXC chemokine (it contains the amino acid sequence E-L-R immediately before its CXC motif) that recruits neutrophils during inflammation of the lungs. It is highly abundant in epithelial cells of the lung,[1] and can also be found in other mucosal organs such as the urogenital and gastrointestinal tracts, and in endocrine organs like the adrenal gland.[2] The gene for CXCL15 is found on mouse chromosome 5.