leukocyte (redirected from nongranular leukocyte)

leukocyte /leu·ko·cyte/ (loo´ko-sīt) white cell, white blood cell; a colorless blood corpuscle capable of ameboid movement, whose chief function is to protect the body against microorganisms causing disease and which may be classified in two main groups: granular and nongranular. leukocyt´ic

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agranular leukocyte  nongranular l.

basophilic leukocyte  basophil (2).

eosinophilic leukocyte  eosinophil.

granular leukocyte  granulocyte; a leukocyte containing abundant granules in the cytoplasm, such as a neutrophil, eosinophil, or basophil.

neutrophilic leukocyte  neutrophil (1).

nongranular leukocyte  a leukocyte without specific granules in the cytoplasm, such as a lymphocyte or monocyte.

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leu·ko·cyte or leu·co·cyte (lk-st)

n.

See white blood cell.

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leuko·cytic (-stk) adj.

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Leukocyte

A white blood cell protects the body against infection and fight infection when it occurs. They are bigger than red blood cells.

Mentioned in: Familial Mediterranean Fever, Indium Scan of the Body

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leukocyte

[lo̅o̅′kəsīt]

Etymology: Gk, leukos + kytos, cell

one of the formed elements of the circulating blood system that comprise the cells of immunity and inflammation. Five types of leukocytes are classified by the presence or absence of granules in the cytoplasm of the cell. The agranulocytes are lymphocytes and monocytes. The granulocytes are neutrophils, basophils, and eosinophils. White cells are able to squeeze through intracellular spaces by diapedesis and migrate by ameboid movements. Leukocytes measure 8 to 20 μm in diameter. Normal blood values vary from 5000 to 10,000 leukocytes per cubic millimeter. Leukocytes function as phagocytes of bacteria, fungi, and viruses; detoxifiers of toxic proteins that may result from allergic reactions and cellular injury; and immune system cells. Also spelled leucocyte. Also called white blood cell, white corpuscle. Compare erythrocyte, platelets. See also complete blood count, differential white blood cell count, leukocytosis, leukopenia. leukocytic, adj.

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leukocyte (lōō´kōsīt),

n a white blood cell circulating in the blood. See also lymphocyte and monocyte.

leukocyte, basophilic (basophil),

n a type that has coarse granules stainable with basic dyes and a bent lobed nucleus.

leukocyte count,

n the number of white blood cells in a cubic millimeter of blood. Normal values range from 5000 to 10,000/mm³.

leukocyte, eosinophilic (eosinophil),

n a type that has coarse granules stainable with eosin and a bilobed nucleus.

leukocyte, immature,

n a form of white blood cell usually found in disease (e.g., myelocytes, myeloblasts, lymphoblasts).

leukocyte, monocyte,

n an agranulocyte white blood cell.

leukocyte, polymorphonuclear (PMN), (neutrophil),

n 1. a type with finely granular cytoplasm, an irregularly lobulated nucleus, and the appearance of a microphage. It is found in the tissues during acute inflammatory processes and in the superficial surface aspects of a lesion during subacute or chronic inflammation. It is the predominating leukocyte of the blood. Blood levels may be increased during acute inflammatory states and myelogenous leukemia, and decreased in agranulocytosis. See also neutropenia; polymorphonuclear leukocyte; neutrophilia.

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leukocyte

a white blood cell capable of ameboid movement, whose chief function is to protect the body against microorganisms causing disease and which comprise: granulocytes (basophils, eosinophils, neutrophils), nongranulocytes (lymphocytes, monocytes) and thrombocytes (platelets).

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bovine leukocyte adhesion deficiency

lethal hematological defect inherited as a recessive trait in Holstein cattle; characterized by poor growth, recurrent infection and poor responsivity to standard treatments in calves from 2 to 8 weeks of age. Profound neutrophilia. Death supervenes before two years of age. Called also BLAD.

canine leukocyte adhesion deficiency

an autosomal recessive disease in Irish setters. Neutrophils lack CD11/CD18 adhesion proteins. Affected dogs have a marked neutrophilia and recurrent bacterial infections from an early age.

leukocyte count

tabulation of the numbers and kinds of leukocytes in a blood sample.

endothelial leukocyte

see endotheliocyte.

leukocyte functional antigens

a group of cell surface antigens involved in intracellular adhesion.

granular l's

granulocytes; leukocytes containing abundant granules (lysosomes) in their cytoplasm, including neutrophils, eosinophils and basophils.

leukocyte migration-inhibition factor

a lymphokine elaborated by activated T or B lymphocytes that inhibits polymorphonuclear leukocyte migration.

polymorphonuclear leukocyte

any of the fully developed, segmented cells of the granulocyte series, especially a neutrophil, whose nuclei contain three or more lobes joined by filamentous connections.

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Patient discussion about nongranular leukocyte.

Q. can i get a short explanation about white blood cells and their job? what does it mean if i have a insafition

A. White blood cells (WBC's) are the ones responsible for the immune system in the body. The white blood cell count rises in cases of infection, steroid use and other conditions. A low white blood cell count can have many causes, which need to be further evaluated by a doctor.