Which of the following is a classic example of Type IV hypersensitivity mediated by CD8+ cytotoxic T-lymphocytes (CTLs)?
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Correct answer: Type 1 Diabetes Mellitus
In Type 1 Diabetes, CD8+ CTLs directly target and destroy insulin-producing beta cells in the pancreatic islets. While many Type IV reactions involve CD4+ cells (like contact dermatitis), islet destruction is primarily a CTL-mediated process.
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