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Understanding Leukocytes: The White Blood Cell Heroes

Dive into the world of leukocytes, the white blood cells that are key players in the immune system's defense against infections and foreign materials. Learn about the different types of leukocytes, their functions, and how they respond to various threats. Explore leukocyte disorders, quantitative and qualitative aspects, and their significance in maintaining health.

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Understanding Leukocytes: The White Blood Cell Heroes

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  1. Dora Bračko, 2nd year 2013/2014 Mentor: A. Žmegač Horvat

  2. LEUKOCYTE white cell

  3. part of the immune system infection, foreign materials 7000 to 9000 cells per µL of blood  1%

  4. AGRANULOCYTES (MONONUCLEAR) GRANULOCYTES (POLYMORPHONUCLEAR)

  5. 62% multi-lobed nucleus bacterial or fungal infections first responder phagocytosis of bacteria Neutrophilgranulocyte

  6. 2.3% bi-lobed nucleus; cytoplasm full of granules parasitic infections allergic reactions EOSINOPHIL GRANULOCYTE

  7. 0.4% bi- or tri-lobed nucleus; large granules allergic and antigen response histamine Basophilgranulocyte

  8. 30% nucleus eccentric in location immune response B cells, T cells, natural killer cells lymphocyte

  9. 5.3% kidney-shaped nucleus phagocytosis presentation of pieces of pathogens to T cells in tissues  macrophages monocyte

  10. migrate into body tissues • Kupffer cells • histiocytes • dendritic cells • mast cells • microglia Fixedleukocytes

  11. quantitative • proliferative (leukocytosis): neutrophilia, eosinophilia • leukopenia: neutropenia, lymphocytopenia • qualitative • volume, conductivity, granularity disorders

  12. http://en.wikipedia.org/wiki/White_blood_cell http://www.britannica.com/EBchecked/topic/337728/white-blood-cell http://health.howstuffworks.com/human-body/systems/circulatory/blood2.htm References

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