White blood cell)

Source: Internet
Author: User

 

Wikipedia

Http://zh.wikipedia.org/wiki/%E7%99%BD%E8%A1%80%E7%90%83

 

White blood cells(Latin:Leucocytus(From the ancient Greek language Leuk ós "white" and K ý tos "Hollow"), German:Leukozyt, English:White blood cellOrLekocyteIs an important blood cell in the blood. In addition to white blood cells, human blood also contains red blood cells, platelets and plasma.

As part of the immune system, white blood cells help the body resist infectious diseases and foreign things. The white blood cells have nucleus and can be deformed. Normally, the white blood cells in healthy adults are 4x109 to 1.1x1010/litre of blood. The total number of white blood cells or the percentage of cells in the blood may change when the body suffers from cancer or other diseases.

In addition to blood, white blood cells are also present in the lymphatic system, spleen, tonsils, and other tissues of the body.

Leukemia is a type of malignant disease that is caused by the loss of control due to abnormal growth of white blood cells.[1]

 

White blood cell type [edit]
Scanned electron microscope photos. The neutral white blood cells swallowed up the bacteria. Color is colored when the image is processed. What is true is that there is no color of granular white blood cells (granularities) [editing]

This type of white blood cells contains several tiny cystic particles in the cytoplasm, and many enzymes are stored in the particles. According toDyeing PropertiesIt can be divided:

    • White blood cells
    • White blood cells
    • Alkaline white blood cells
Grain-free white blood cells [edit]
    • Lymphocytes: usually present in the lymphatic system. There are three types of lymphocytes in the blood: B cells, T cells, and natural killer cells. B cells generate antibodies that can constrain pathogens. CD4 + T cells work with immune response. CD8 + T cells (cytotoxin) and natural killer cells can kill infected cells.
    • Single-core cells: they have the "clean up" function of the neutral cells, but they live longer than the neutral cells because they have other responsibilities. The passing of the antigen fragments of the macrophages to T cells allows the pathogens to be recognized and killed again or to accelerate the body's immune response.
Other tissue cells [edit]
    • Tissue cells exist in the lymphatic system and other body fluids, but are usually not in the blood.
      • Macrophages
        • Macrophages
        • Other swallowed cells, such as granularities and DCS
    • Hypertrophy
Overall table [edit]
Type Microscopic appearance Illustration Approximately proportion of humans (%)[2]
See also:
Blood values
Diameter (μm)[3] Main objectives[2] Nucleus[2] Granules[2] Lifecycle
Neutral Granule) 54-62% 12-15
  • Bacteria
  • Fungi
3-5 leaves Tiny, blurred pink About 6 hours to several days in the blood
(Days in spleen and other tissues)
Macrophages 1-6% 12-15
  • Parasite
  • Allergic reactions
2 leaves Pink to orange after coloring
Alkaline granularities <1% 9-10
  • Allergic reactions
2-3 leaves Big blue
Lymphocytes 25-33% 8-10
  • B cells: various pathogens
  • T cells:
    • CD4 + (helper): Intracellular Bacteria.
    • CD8 + cytotoxict cells: virus-infected and tumor cells.
    • Gamma delta T cells:
  • Natural killer cells: viruses-virus infection and tumor cells.
Deeply staining, eccentric Only NK-Cells[4] Weeks to years
Macrophages 2-10% 14-17 Multiple aspects Kidney Type No  
Macrophages   21 (human)   Days
Tree Cells     The main function is to activate T-cells as an antigen-presenting cell (APC ).   Similar to Macrophages
White blood cells [edit] White blood cells [edit] White blood cells [edit]

Alkaline white blood cells mainly lead to allergic reactions, releasing histines and causing vascular relaxation.

# Editing

White blood cell)

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