The granulocytes are the cells which contain secretory granules in its cytoplasm. The granulocytes are a part of the white blood cells or "leukocytes" which provide immunity to the organism.
The granulocytes are of three types called mainly the neutrophil, basophil, or eosinophil which provide immunity by ingesting the foreign material and digest the invading microbes by the action of enzymes produced by the granules in the cytoplasm.
