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Found Leukocyte 24 times.

Displaying results 1 to 10.

1. Antitrypsin (alpha-1-antitrypsin, alpha-1-protease inhibitor)
This is a glycoprotein produced in the liver which is the major antiprotease in the blood, serving mainly to inhibit leukocyte elastase. It is a single-chain molecule, has 394 amino acid s and a molecular weight of 51,000. * Hereditary antitrypsin deficiency is one of the most common genetic disorders among males of European descent. Alpha-1-antitrypsin deficiency results in leukocyte elastase building up and breaking down the lining of the lung, which results in a severe form of emphysema (oxidizing agents in cigarette smoke are also known to inactivate antitrypsin, thus causing the high rates of emphysema among long-term smokers). Because over 20,000 people are affected by this deficiency, large amounts of this antiprotease are needed. To meet the demand, researchers are genetically engineering sheep that produce the antiprotease in their milk.

2. Bone marrow
The soft inner portion of bones. Three types of blood cells are created in the bone marrow: * leukocyte s * erythrocyte s * thrombocyte s

3. Chemokine
A chemokine is a type of cytokine (a soluble molecule that a cell produces to control reactions between other cells) that specifically alters the behavior of leukocyte s (white blood cells). Examples include interleukin 8, platelet factor 4, melanoma growth stimulatory protein, etc.

4. Eosinophil
A type of granular leukocyte that is an amoeba-like scavenger that disposes of cellular debris. This cell takes its name from the fact that it can be stained with eosin . People with parasitic infections typically have increased numbers of these cells in their bloodstream.

5. Granulocytes (polymorphonuclear leukocytes)
A class of leukocyte s characterized by the presence of granules in their cytoplasm . These cells are active in allergic immune reactions such as arthritic inflammation and rashes. All granulocytes contain the enzyme myeloperoxidase . This class includes basophil s, eosinophil s and neutrophil s; they are classified according to the pattern/color they exhibit when they are stained with certain dyes.

6. Human leukocyte-associated antigens (HLA antigens)
Protein s on the outer part of body cells that help fight illness. These proteins vary from person to person. Scientists think that people with certain types of HLA antigen s are more likely to develop insulin -dependent diabetes . The HLA antigens are also responsible for histocompatibility reactions.

7. Immunocyte
A leukocyte that is able to stage an immune response.

8. Interleukin 1 (leukocyte activating factor, IL1)
A protein factor produced by macrophage s (a type of white blood cell ) which plays an important role in activating T lymphocyte s and B lymphocyte s when antigen s or mitogen s are present. Interleukin 1 and interleukin 2 are both known to be involved in achieving T-cell-mediated immunity .

9. Killer cell (K cell)
An effector cell, such as a cytotoxic T cell, leukocyte or macrophage , that regulates antibody -dependent cell toxicity.

10. Leukemia
Any of several cancers of blood-forming organs (usually bone marrow cells) which result in the uncontrolled production of abnormal white blood cells ( leukocyte s); advanced stages of the disease can turn the blood virtually white (thus the name, since "leuk-" means "white").

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