Under normal circumstances, weak interactions between B‑cell
receptors and self‑antigens fail to trigger full activation due to
signalling thresholds that enforce tolerance. In a genetically modified system,
B cells show normal development and receptor diversity but require
significantly less signalling input for activation. Over time, this system
develops circulating autoantibodies and immune complex‑mediated
pathology.

What is the most likely immunological consequence of
lowering this activation threshold?

Question

Under normal circumstances, weak interactions between B‑cell
receptors and self‑antigens fail to trigger full activation due to
signalling thresholds that enforce tolerance. In a genetically modified system,
B cells show normal development and receptor diversity but require
significantly less signalling input for activation. Over time, this system
develops circulating autoantibodies and immune complex‑mediated
pathology.

What is the most likely immunological consequence of
lowering this activation threshold?

Accepted Answer

Increased activation of autoreactive B cells due to permissive responses to weak self‑antigen interactions

Answer

Reduced antibody binding strength, limiting immune complex formation

Answer

Inability to complete B‑cell activation due to impaired co‑stimulatory signalling

Answer

Enhanced deletion of autoreactive B cells through stricter selection mechanisms

Crowdly

Under normal circumstances, weak interactions between B‑cell receptors and sel...

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