Which immunological consequence results when B-cells undergo somatic hypermutation in germinal centers?

💡 Explanation

Somatic hypermutation introduces random mutations within antibody genes; affinity maturation occurs because B-cells producing antibodies with higher affinity for the antigen are preferentially selected to survive and proliferate, therefore driving the antibody affinity higher rather than leading to tolerance.

• Why does uncontrolled growth result from mutations affecting growth factor receptor tyrosine kinases in cancer cells?
• If a cell continually expresses a receptor protein without appropriate regulatory signals, which consequence follows regarding hormone sensitivity?
• If a substance consistently floods the nucleus accumbens with dopamine, what is the most likely long-term consequence affecting the reward circuit?
• A professional musician develops hyperacusis (increased sensitivity to certain frequencies) following prolonged exposure to loud music. Which mechanism explains why specific frequencies trigger acute discomfort in this condition?
• Why does prolonged occlusion of sebaceous follicles, as with a non-porous bandage, increase the risk of Cutibacterium acnes proliferation?
• If a burn patient exhibits excessive collagen deposition during the healing process on their arm, which consequence follows?