<prompt> Which of the following is a chemokine?Leukotriene A4IL-8C5C3  <response>: Their name is derived from their ability to induce directed chemotaxis in nearby responsive cells; they are chemotactic cytokines. Interleukin-8 IL-8 is a chemokine produced by macrophages and other cell types such as epithelial cells. It is also synthesized by endothelial cells, which store IL-8 in their storage vesicles, the Weibel-Palade bodies. 