leucocyte

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Related to Leucocytes: Lymphocytes, Neutrophils, White blood cells

leu·ko·cyte

(lū'kō-sīt)
A type of cell formed in the myelopoietic, lymphoid, and reticular portions of the reticuloendothelial system in various parts of the body, and normally present in those sites and in the circulating blood. Under various abnormal conditions, the total number of leukocytes may be increased or decreased or their relative proportions altered, and they may appear in other tissues and organs. Leukocytes represent three lines of development from primitive elements: myeloid, lymphoid, and monocytic series. On the basis of features observed with various methods of staining with polychromatic dyes, cells of the myeloid series are frequently termed granular leukocytes, or granulocytes; because the cytoplasmic granules of lymphocytes and monocytes are smaller and frequently not clearly visualized with routine methods, these cells are sometimes termed nongranular or agranular leukocytes. Granulocytes are commonly known as polymorphonuclear leukocytes (also polynuclear or multinuclear leukocytes), because in a mature cell the nucleus is divided into two to five rounded or ovoid lobes that are connected with thin strands or small bands of chromatin; they consist of three distinct types: neutrophils, eosinophils, and basophils, named on the basis of the staining reactions of the cytoplasmic granules. Cells of the lymphocytic series are smaller than other leukocytes and have relatively large, darkly staining, eccentrically placed nuclei. Cells of the monocytic series are usually larger than the other leukocytes and are characterized by a relatively abundant, slightly opaque, pale blue or blue-gray cytoplasm that contains many fine reddish-blue granules. Monocytes are usually indented, reniform, or shaped similarly to a horseshoe, but are sometimes rounded or ovoid; their nuclei are usually large and centrally placed and, even when eccentrically located, are completely surrounded by at least a small band of cytoplasm.
Synonym(s): white blood cell, leucocyte.
[leuko- + G. kytos, cell]

leucocyte

Any kind of white blood cell. The leukocytes include the neutrophil POLYMORPHONUCLEAR LEUKOCYTES (‘Polymorphs’), EOSINOPHILS, BASOPHILS, LYMPHOCYTES and MACROPHAGES.

leu·ko·cyte

(lū'kō-sīt)
Cell formed in myelopoietic, lymphoid, and reticular portions of the reticuloendothelial system in various parts of the body, and normally present in those sites and in the circulating blood.
Synonym(s): white blood cell, leucocyte.
[leuko- + G. kytos, cell]

Patient discussion about leucocyte

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.

More discussions about leucocyte
References in periodicals archive ?
Data was collected from the subjects for whom hematological parameters (hemoglobin, hematocrit, leucocyte, neutrophil, lymphocyte and thrombocyte) were available in the database of Ege University Hospital.
When setting the cutoff to 0.519, the seminal leucocytes count sensitivity was only 80.0, and specificity was 100.0 (AUC = 93.8%) (Table 2).
Signore, "Guidelines for the labelling of leucocytes with [sup.111]In-oxine," European Journal of Nuclear Medicine and Molecular Imaging, vol.
Caption: Figure 1: Relative MIF mRNA expression of total leucocytes in the clinical manifestation of ACS and CG.
Abbreviations HLA - human leucocyte antigens MHC - major histocompatibility complex WHO - World Health Organization CDC - complement dependent cytotoxicity PCR - polymerase chain reaction TRALI - transfusion related acute lung injury vCJD - variant Creutzfeldt-Jakob disease History
Blood samples were analysed for high sensitive IL-6 (IL-6), leucocytes, creatine kinase (CK), and myoglobin (Mb).
(7) have shown that increased leucocyte and neutrophil counts with neutrophil/leucocyte ratio are a poor predictor for perforation, while Abidi et al.
Altun et al., "Myeloperoxidase activities in polymorphonuclear leucocytes in lumbar disc disease," Journal of Neurological Sciences, vol.
Laboratory parameters such as C-reactive protein (CRP), total leucocytes count, and D-dimers, as well as the existence of consolidation in chest X-ray, were identified on admission.
However, in this study, increase in the TLC during secretory phase is due to increase in all the subpopulations of leucocytes. This finding issimilar to that observed in the previous studies by Mathur et al.
What cells in the human body are called leucocytes? In which war was the Lewis gun mainly used?