Leukocytes

Segmented , segmenter, seg, polymorphonuclear leukocyte (PMN), poly.

Eo.

Baso.

Lymph.

Mono.

Many large, pale granules that do not stain either red or blue .

Many large granules that stain bright pink to red.

Many large granules that stain dark blue to purple.

Few or no granules. One that is round.

Few or no granules. One that is kidney bean–shaped.

Three or more lobes. Engulf and destroy bacteria
Granulocyte

Two lobes. Release chemicals to destroy foreign cells (pollen, animal dander, dust, etc.) and kill parasites.
Granulocyte

More than one lobe. Release histamine at the site of tissue injury; release heparin to limit the size of a forming blood clot
Granulocyte

Produce antibodies (immunoglobulins); produce toxic granules to destroy cells infected with a virus.
Agranulocyte.

Engulf and destroy microorganisms, cancerous cells, dead leukocytes, and cellular debris.
Agranulocyte