Cells of immune system

112

 1. Macrophages

  • Derived from monocytes
  • Present in tissues of brain and liver
  • Highly phagocytic in nature to bacteria and other cells

  2. Monocytes

  • Monocytes are the largest cells of the blood
  • These mature monocytes circulate in the blood for the first 8 hours of their life, and, then, they leave the blood system, and enter various tissues of the body.

 3.Natural killer cells

  • Uses apoptotic pathway and kill pathogens or cells
  • Helps to fight against tumor and cancer cells

 4. Neutrophils

  • Most important white blood cells
  • Phagocytic cells
  • Migrate from blood to tissue
  • They develop reactive oxygen species which is very reactive and this superoxide skill pathogen

 5. T cells

  • T cells help in forming more macrophages
  • Indirectly helps in killing pathogens
  • They are of two types one is helper cells and one is cytotoxic cells

  6. Dendritic cells

  • This are antigen presenting cells
  • Thet go against infected cells tumor cells and cancer cells
  • These are phagocytic in nature
  • Present mostly in lymph glands and different layer of tissues

 7. Eosinophils

  • These are WBC cells
  • The play against parasitic cells
  • Interact with antibodies and infect the parasite which form holes or kill them
  • They release chemicals and it is called ADCC (antibody dependent cellular cytotoxicity)
  • Moves from blood to tissues

   8. Mast cells

  • Developing specific body response as inflammation
  • This secrete chemicals like leucocytes histamines and prostaglandins
  • There are responsible for various allergic reactions which is released by histamines In response to other allergens

   9. B cells

  • Mature enough to form plasma cells
  • This form antibodies

 10. Basophils

  • The basophil has a lobed nucleus and heavily granulated cytoplasm that stains with the basic dye methylene blue.
  • They actively involved in allergic reactions.