leucocyte

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Related to leucocytic: leukocyte

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 ?
(c) Multifocal areas of leucocytic infiltration (LI) around smooth muscle fibers (S) in the dermis, H&E x200, (d) epidermal edema (EO), and vascular congestion (VC) with diffuse leucocytic infiltration (LI) in the dermis after 10 dpw, H&E x200.
On the other hand, kidneys of rats from control + FS group showed congestion of glomerular tufts as well as perivascular leucocytic cells infiltration as shown in Fig.
Our results showed that the histopathological changes in the liver were mainly represented by parenchymatous degeneration of hepatocytes with mild necrosis, leucocytic infiltration in the portal area, severe congestion and hemorrhage.
Haemoglobin (Hb), packed cell volume (PCV), total leucocytic count (TLC) and total erythrocytic count (TEC) was determined as per method described by Jain (1986).
Laboratory tests revealed Haemoglobin 13.5 g/dL, leucocytic counts 12,600, Bilirubin Total/Direct 3.68/3.35 mg/dL, AST 230 IU/L, ALT 216 IU/L and Alkaline Phosphatase 272 IU/L.
Eight weeks later, fish fed C.A growth(r) probiotic revealed significant increase in phagocytic activity, differential leucocytic count, serum lysozyme and bactericidal activity, total protein and globulin levels than fish fed on Tonolest(r) probiotic.
TLR2 knockout (KO) mice have a reduced infarct size, improved cardiac function, and attenuated myocardial inflammation which is mediated via leucocytic TLR2 expression [11, 12].
Total leucocytic count, absolute neutrophilic count, hemoglobin percentage and platelet count were significantly lower in septic neonates in comparison to the non septic group.
It is possible that reduced mobility among the HD animals has elicited the greater leucocytic reaction.
Induction of leucocytic infiltrates in rabbit skin by acetyl glyceryl ether phosphorylcholine.
Hence, it was promptly renamed as "Human Leucocytic Antigen" (HLA).(13).
Table 1: Haematological values Parameters Pre Post treatment treatment Hb (g %) 6.8 9.2 TEC (x[10.sup.6]/1/4L) 4.62 5.21 PCV (%) 21 30 TLC(x[10.sup.3]/1/4L) 20.5 11400 Platelet 196000 248000 Differential Leucocytic count Neutrophils (%) 50 45 Lymphocytes (%) 47 54 Eosiophils (%) 02 01 Monocyte (%) 01 00 Haemoprotozoan Theileria annulata Piroplasm parasite (piroplasm) negative Faecal examination Coccidial oocyst Negative