Granulocytes

Leukocytes with abundant granules in the cytoplasm. They are divided into three groups: neutrophils, eosinophils, and basophils.


Phagocytic (scavenging, ingesting) cells that are part of the immune system. When their cell nucleus is segmented into lobes and they have granule-like inclusions within their cytoplasm (the neutrophils, eosinophils, and basophils) they are collectively known as polymorphonuclear granulocytes.


These are a group of white blood cells that have many and well-pigmented granules, and derive from the bone marrow myeloblasts. The classic ones are neutrophils, eosinophils, and basophils, but should also include mast cells. Also, macrophages start out as agranulocytic monocytes but get lots of granules when they grow up. The granules are sources of digestive, immunologic, and inflammatory proteins.


Phagocytic white blood cells filled with granules containing potent chemicals that allow the cells to digest microorganisms. Neutrophils, eosinophils, basophils, and mast cells are examples.


A type of leucocyte or white blood cell which contains granules, e.g. a basophil, eosinophil or neutrophil.


Type of white blood cell characterized by granules in the cytoplasm; it includes the basophil, eosinophil, and neutrophil.


A type of white blood cell named for its grainy appearance. The grains are granules of powerful chemicals the granulocytes use to attack invading microorganisms and foreign matter. Granulocytes have key roles in the inflammatory reactions to disease and infection. There are three types of granulocytes: neutrophils, eosinophils, and basophils, all named for the way they react to the laboratory stains used to make them visible under a microscope. Neutrophils attack invading microorganisms by engulfing or swallowing them, then releasing the chemicals in their granules. Eosinophils and basophils rely on releasing the chemicals in their granules.


Any of a group of white blood cells that, when stained with Romanovsky stains, are seen to contain granules in their cytoplasm. They can be subclassified on the basis of the color of the stained granules into neutrophils, eosinophils, and basophils.


A variety of white blood cells, also called polymorphonuclear leucocytes, which, when stained with Romanowsky stains containing thiazine dyes and eosin, are found to contain granules in their cytoplasm. The colour of the granules enables the cells to be further classified as basophils, eosinophils, and neutrophils. Neutrophils isolate and destroy invading bacteria pus comprises mostly neutrophils. Eosinophils are also involved in the body’s allergic response to foreign proteins, and basophils are involved in inflammatory and allergic reactions.


A granular leukocyte; a polymorphonuclear leukocyte (neutrophil, eosinophil, or basophil).


Within the realm of white blood cells, there exist various classifications characterized by the presence of granules within their cellular composition.


 


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