Leukocytes, from the Greek leukos leuke leukon: white, and kytos kutou: hollow, cavity, enveloping body or white blood cells, as an important part of the immune system, have the Mission of destroying all the elements foreign to the body and which enter the, previous identification. This action is coordinated and to communicate through the secretion of different types of cytokines ( 41 protein molecules. This secretion of substances to the outside of the cell is called exocytosis, ex-: out, out-of- and kytos kytou: cell, blood cell, cavity: outside of the cell. Leukocyte exocytosis is therefore the expulsion abroad of leukocytes from certain substances for purposes of coordination of immune
