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Immune system

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    Infectious and non-infectious diseases. Immunity and the immune response
  •   Study   Slideshow
  • What is herd immunity?
    A situation in which a disease cannot spread through a group of people because enough of them are immune usually because of having been vaccinated
  •  20
  • Give two examples of first-defense barriers (physical or chemical)
    skin, saliva, mucous, cilia, etc
  •  15
  • When these cells sense an infection, they activate other immune cells to fight it.
    Helper T cell
  •  20
  • They are white blood cells of the innate immune system, that destroy infected and diseased cells, like cancer cells.
    Natural killer cells
  •  20
  • Two types of antigen-presenting cells
    dendritic cells and macrophages
  •  20
  • Define vaccine
    A preparation that is used to stimulate the body's immune response against diseases
  •  20
  • what type of immunity do vaccines provide?
    active acquired immunity
  •  20
  • Which doctor carried out the first vaccination?
    Edward Jenner
  •  20
  • Define autoimmunity
    It is the condition that occurs when our immune system attacks its own tissues and cells.
  •  20
  • What is immunodeficiency?
    Inability to produce an adequate immune response because of an insufficiency or absence of antibodies, immune cells, or both
  •  20
  • What is allergy?
    An allergy is where your body reacts to something that's normally harmless like pollen, dust or animal fur.
  •  20
  • There are two types of immunodeficiency
    Congenital and adquired
  •  20