Neutrophil - ορισμός. Τι είναι το Neutrophil
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Τι (ποιος) είναι Neutrophil - ορισμός

MOST ABUNDANT WHITE BLOOD CELL, A TYPE OF GRANULOCYTE
Neutrophils; Neutrophil granulocytes; Neutrofil; Neutrofile; Neutrophyl; Neutrophyle; Neutrofiele; Neutrophill; Polymorphonuclear neutrophil; Segmented neutrophil; Polymorphonuclearcyte; Neutropils; Neutrophilic; Neutrophil granule; Polymorphonuclear neutrophil cells; Microphage; Polymophonuclear leukocyte; Neutrocyte; Neutrophil chemotaxis; Nutrifil; Neutrofils; Neutrophil granulocyte; Nutrafil; Neutrocytes; Neutrophil drumstick; PMNs; Heterophil; Drumstick (genetics); Neutrophil activation; Neutrophil infiltration
  • 50px
  • HSC=[[hematopoietic stem cell]], Progenitor=[[progenitor cell]], L-blast=[[lymphoblast]], [[lymphocyte]], Mo-blast=[[monoblast]], [[monocyte]], [[myeloblast]], Pro-M=[[promyelocyte]], [[myelocyte]], Meta-M=[[metamyelocyte]], neutrophil, [[eosinophil]], basophil, Pro-E=proerythroblast, Baso-E=basophilic erythroblast, poly-e=[[polychromatic]] erythroblast, ortho-E=orthochromatic erythroblast, [[erythrocyte]], [[promegakaryocyte]], [[megakaryocyte]], [[platelet]]
  • Hypersegmented neutrophil
  • Activity of neutrophil-killer and neutrophil-cager in NBT test<ref name="killers-cagers"/>
  • alt= Long rod-shaped bacteria, one of which has been partially engulfed by a larger blob-shaped white blood cell. The shape of the cell is distorted by undigested bacterium inside it.
  • Neutrophil granulocyte migrates from the blood vessel to the matrix, secreting proteolytic enzymes to dissolve intercellular connections (to the improvement of its mobility) and envelop bacteria through phagocytosis.
  • Micrograph showing several neutrophils during an acute inflammation
  • [[Reference ranges for blood tests]] of white blood cells, comparing neutrophil amount (shown in pink) with that of other cells

neutrophil         
['nju:tr?(?)f?l]
¦ noun Physiology a phagocytic white blood cell that is stained only by neutral dyes.
Neutrophil         
·add. ·noun One of a group of leucocytes whose granules stain only with neutral dyes.
Neutrophil         
Neutrophils (also known as neutrocytes or heterophils) are the most abundant type of granulocytes and make up 40% to 70% of all white blood cells in humans. They form an essential part of the innate immune system, with their functions varying in different animals.

Βικιπαίδεια

Neutrophil

Neutrophils (also known as neutrocytes, heterophils or polymorphonuclear leukocytes) are the most abundant type of granulocytes and make up 40% to 70% of all white blood cells in humans. They form an essential part of the innate immune system, with their functions varying in different animals.

They are formed from stem cells in the bone marrow and differentiated into subpopulations of neutrophil-killers and neutrophil-cagers. They are short-lived (between 5 and 135 hours - more Chapter Lifetime below) and highly mobile, as they can enter parts of tissue where other cells/molecules cannot. Neutrophils may be subdivided into segmented neutrophils and banded neutrophils (or bands). They form part of the polymorphonuclear cells family (PMNs) together with basophils and eosinophils.

The name neutrophil derives from staining characteristics on hematoxylin and eosin (H&E) histological or cytological preparations. Whereas basophilic white blood cells stain dark blue and eosinophilic white blood cells stain bright red, neutrophils stain a neutral pink. Normally, neutrophils contain a nucleus divided into 2–5 lobes.

Neutrophils are a type of phagocyte and are normally found in the bloodstream. During the beginning (acute) phase of inflammation, particularly as a result of bacterial infection, environmental exposure, and some cancers, neutrophils are one of the first responders of inflammatory cells to migrate toward the site of inflammation. They migrate through the blood vessels and then through interstitial space, following chemical signals such as interleukin-8 (IL-8), C5a, fMLP, Leukotriene B4, and H2O2 in a process called chemotaxis. They are the predominant cells in pus, accounting for its whitish/yellowish appearance.

Neutrophils are recruited to the site of injury within minutes following trauma and are the hallmark of acute inflammation; however, due to some pathogens being indigestible, they might not be able to resolve certain infections without the assistance of other types of immune cells.

Παραδείγματα από το σώμα κειμένου για Neutrophil
1. Tevagrastim is used to treat chemotherapy–induced neutropenia, a condition by a low count of neutrophil white blood cells.