Leukocyte Apheresis
Leukocyte apheresis is a medical device therapy (selective granulocyte/monocyte adsorptive apheresis; GMDN code: 47306) for the treatment of inflammation of the Large intestine, colon. It works by removing from the blood a group of white blood cells called activated leukocytes that play a key role in the inflammatory stages of ulcerative colitis (UC). Selectively reducing these cells in the blood helps to reduce inflammation in the colon. Leukocyte apheresis can help UC patients with chronic, grumbling disease who are either unsuitable for, intolerant of, or failing on medicines described above. References

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Granulocyte
Granulocytes are cells in the innate immune system characterized by the presence of specific granules in their cytoplasm. Such granules distinguish them from the various agranulocytes. All myeloblastic granulocytes are polymorphonuclear. They have varying shapes (morphology) of the nucleus (segmented, irregular; often lobed into three segments); and are referred to as polymorphonuclear leukocytes (PMN, PML, or PMNL). In common terms, ''polymorphonuclear granulocyte'' refers specifically to "neutrophil granulocytes", the most abundant of the granulocytes; the other types ( eosinophils, basophils, and mast cells) have varying morphology. Granulocytes are produced via granulopoiesis in the bone marrow. Types There are four types of granulocytes (full name polymorphonuclear granulocytes): * Basophils * Eosinophils * Neutrophils * Mast cells Except for the mast cells, their names are derived from their staining characteristics; for example, the most abundant granulocyte is the ...
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