These are distinguished from the other category of leucocytes - which are called granulocytes, by the fact that agranulocytes do not contain chemical-filled cytoplasmic vesicles called "granules".
The two important types of agranulocytes are:
The most important functions of agranulocytes are immune functions.
For more information about other components (sometimes called the 'constituents') of blood, see the page about the structure and functions of blood. This may interest students of holistic massage, reflexology, beauty therapies, or health-related courses.