Leukocyte

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Dictionary Meaning and Definition on 'Leukocyte'

Leukocyte Meaning and Definition from WordNet (r) 2.0
    leukocyte n : blood cells that engulf and digest bacteria and fungi; an important part of the body's defense system [syn: leucocyte, white blood cell, white cell, white blood corpuscle, white corpuscle, WBC]
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Wikipedia Meaning and Definition on 'Leukocyte'


White blood cells, or leukocytes (also spelled "leucocytes," "leuco-" being Greek for white), are cells of the immune system involved in defending the body against both infectious disease and foreign materials. Five

The number of WBCs in the blood is often an indicator of disease. There are normally between 4×109 and 1.1×1010 white blood cells in a litre of blood, making up approximately 1% of blood in a healthy adult. An increase in the number of leukocytes over the upper limits is called leukocytosis, and a decrease below the lower limit is called leukopenia. The physical properties of leukocytes, such as volume, conductivity, and granularity, may change due to activation, the presence of immature cells, or the presence of malignant leukocytes in leukemia.

The name "white blood cell" derives from the fact that after centrifugation of a blood sample, the white cells are found in the buffy coat, a thin, typically white layer of nucleated cells between the sedimented red blood cells and the blood plasma. The scientific term leukocyte directly reflects this description, derived from Greek λευκό (white), and κύτταρο (cell). Blood plasma may sometimes be green if there are large amounts of neutrophils in the sample, due to the heme-containing enzyme myeloperoxidase that they produce.

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Leukocyte Sample Sentences in News


  • Newly discovered molecule may offer hope for immune disorders and runaway inflammation
    ( Federation of American Societies for Experimental Biology ) A new research discovery published in the Journal of Leukocyte Biology may open the door to new therapies that help treat immune disorders or curb runaway inflammation. Specifically, scientists have discovered a molecule that can induce cell death (apoptosis) in a key type of immune cell (dendritic cell Read more on this news related to 'Leukocyte'
  • Press Release
    CEL-SCI Corporation (NYSE MKT: CVM) a late-stage oncology company today announced that the Company is a Gold Sponsor of the European Congress on Head and Neck Oncology (ECHNO 2014) which will be held in Liverpool England from April 24th through 26th 2014. CEL-SCI will sponsor a symposium regarding its investigational immunotherapy candidate Multikine®* (Leukocy Read more on this news related to 'Leukocyte'
  • New research may open door to novel therapies for treating immune disorders
    A new research discovery published in the April 2014 issue of the Journal of Leukocyte Biology may open the door to new therapies that help treat immune disorders or curb runaway inflammation. Specifically, scientists have discovered a molecule that can induce cell death (apoptosis) in a key type of immune cell (dendritic cells). Read more on this news related to 'Leukocyte'

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