Small lymphocytes are the major part of lymphocytes in the blood. The cell has a large roundish and regular nucleus.
Size:
9 µm.
Cytoplasm:
Scanty cytoplasm is often barely visible and quite often seen only at the nuclear periphery. It may form a fine blue line around the nucleus or have the appearance of a pointed hat. The cytoplasm does not contain granules. It is distinctly basophilic with a high nucleocytoplasmatic ratio (about 9:1).
Nucleus:
Eccentrically located, round or oval, often with an indentation in one place; chromatin is heavily clumped, forming compact lumpy accumulations without sharp demarcations.