Definition of immune system in English:

immune system


  • The organs and processes of the body that provide resistance to infection and toxins. Organs include the thymus, bone marrow, and lymph nodes.

    • ‘The body's immune system reacts to both these infections by attacking the bacteria.’
    • ‘They also discovered that the host animal must have a healthy immune system for infection to take hold.’
    • ‘The body's immune system responds by creating a membrane around this infected portion of the brain.’
    • ‘Other risk factors include poor diet, smoking and a weakened immune system.’
    • ‘To be infectious it would have to survive cooking, digestion, and the human immune system.’
    • ‘Once the immune system has been damaged, opportunistic infections begin to appear.’
    • ‘Finally, much of the toxicity related to gene transfer is mediated through the immune system.’
    • ‘The infection causes the immune system to activate white blood cells and chemicals to fight the bacteria.’
    • ‘Others have immune systems suppressed by chemotherapy or anti-rejection drugs.’
    • ‘Children and people with lowered immune systems may remain infectious for longer.’
    • ‘In most cases lung infection is well controlled by the immune system, and shows no symptoms.’
    • ‘Why shouldn't alternative therapies that make you feel better boost your immune system?’
    • ‘It may also affect the immune system and lead to an increased frequency of infections.’
    • ‘In comparison with people not in hospital, they are more likely to have a weakened immune system.’
    • ‘Premature babies are at increased risk of infection because their immune systems are immature.’
    • ‘During this time your body effectively has no immune system and you are at increased risk from infection.’
    • ‘Allergies are caused by the body's immune system reacting to allergens as if they were harmful.’
    • ‘People with weakened immune systems are more likely to develop abscesses.’
    • ‘One important effect of the polio vaccine is to stimulate the immune system within the gut.’
    • ‘These infections only affect people whose immune systems are not working properly as a result of another illness or treatments for cancer.’


immune system