[Biology of granulocytes: differentiation, maturation, function, products]

In this review the biology of granulocytes (PMNL, eosinophils, basophils) is analyzed, with reference to the differentiation and maturation stages, and their function. The phenomenon of phagocytosis and the secretory function are described in detail as well as the different chemical systems which participate in the microbiocidal activity of these cells. Finally, emphasis tis given to the biochemistry of the synthesized and secreted enzymes contained in their granules.