Question

which of the following is not a b cell problem in aging?
a antibodies do not function well
b clones fail to form
c antibodies attack self cells
d increased incidence of cancer

Explanation:

• Option A: Aging can affect B - cell antibody function, so this is a B - cell problem in aging.
• Option B: B - cell clonal formation can be impaired with aging, so this is a B - cell problem in aging.
• Option C: Autoantibodies (antibodies attacking self - cells) can be a result of B - cell dysfunction in aging.
• Option D: Increased cancer incidence in aging is more related to overall immune system decline (including T - cell, immune surveillance, etc.) and not specifically a B - cell problem. B - cells are mainly involved in humoral immunity (antibody production), while cancer surveillance involves multiple immune components, with T - cells playing a more direct role in detecting and eliminating cancer cells.

Answer:

D. Increased incidence of cancer