Description:

Round or oval cell; under normal conditions not found in the bloodstream or in the bone marrow.

Size:

15-25 µm.

Cytoplasm:

Distinctly dark-blue in color. Their principal characteristic is the marked cytoplasm, more basophilic in the periphery than around the nucleus.

Nucleus:

Most often oval, eccentrically laid and with fine chromatin structure showing slight tendency to form clumps. It stains red.

Nucleoli:

1-3 nucleoli.