Normal Count: 20-50/mm3

Have histamine containing granules that initiate inflammation.

Normal Count: 100-400/mm3

Large, deep-red cytoplasmic granules are found in response to allergies and parasitic worms.

Normal Count: 3,000-7,000/mm3

Multibodied nucleaus with fine granules.

Act as phagocytes at sites of infection.

Normal Count: 100-700/mm3

Largest of the WBCs and function as phagocytes.

Also important in fighting chronic infection.

Normal Count: 150,000-400,000/mm3

Come from ruptured multinucleate cells (megakaryocytes)

Needed for clotting.

Normal Count: 1,500-3,000/mm3

Nucleus fills most of the cell

Plays an important role in immune response.

RBC

Carry Oxygen

Biconcave discs

Bags of hemoglobin

No nucleus (anucleate)

Contain very few granules

Outnumber WBCs 1000;1

Percent of blood consisting of RBC/measure of oxygen carrying capacity of blood

Abnormally low leukocyte level

Commonly caused by drugs

Above 11,000 leukocytes/ml

Generally indicates infection