Leucocytes or white blood corpuscles are colourless blood cells. These are of two types on the basis of presence or absence of granules in cytoplasm : Granulocytes : Granules are present in cytoplasm of granulocytes. [table] Name of granulocyte | Eosino-phils | Basop-hils | Neutr-ophils ; Percentage (%) | 1-5% | 0.5 - 2.7 % | 60 - 70% [/table] Agranulocytes : Granules are absent in cytoplasm of Agranulocytes. [table] Name of Agranulocyte | Lympho-cytes | Monocytes ; Percentage (%) | 20 - 40% | 2 - 7% [/table] So, maximum numbers of leucocytes are neutrophils.