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Effects of ageing on the immune response include:Group of answer choicesan increasingly exaggerated response of B cells to newly encountered antigensan increase in macrophage numbers resulting in increased autoimmune disordershypertrophy of the thymus resulting in declining numbers of T cellsincreased vulnerability to cancer due to a decline in immune surveillance

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Effects of ageing on the immune response include:Group of answer choicesan increasingly exaggerated response of B cells to newly encountered antigensan increase in macrophage numbers resulting in increased autoimmune disordershypertrophy of the thymus resulting in declining numbers of T cellsincreased vulnerability to cancer due to a decline in immune surveillance

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Solution

The effects of ageing on the immune response include:

  1. An increasingly exaggerated response of B cells to newly encountered antigens: As we age, our immune system's ability to respond to new antigens decreases. This is because the number of B cells, which are responsible for producing antibodies against these antigens, decreases. As a result, the immune response to new antigens becomes more exaggerated, leading to an increased risk of autoimmune disorders.

  2. An increase in macrophage numbers resulting in increased autoimmune disorders: Macrophages are a type of white blood cell that plays a crucial role in the immune response by engulfing and destroying harmful pathogens. However, as we age, the number of macrophages increases, which can lead to an overactive immune response and an increased risk of autoimmune disorders.

  3. Hypertrophy of the thymus resulting in declining numbers of T cells: The thymus is an organ that produces T cells, which are a type of white blood cell that plays a crucial role in the immune response. As we age, the thymus becomes larger (hypertrophy), which results in a decrease in the number of T cells. This can lead to a weakened immune response and an increased risk of infection.

  4. Increased vulnerability to cancer due to a decline in immune surveillance: As we age, our immune system's ability to detect and destroy cancer cells decreases. This is known as immune surveillance. As a result, we become more vulnerable to developing cancer.

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