The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 23-year-old man comes to the physician because of a 1-week history of anorexia, nausea, upper abdominal pain, and dark-colored urine. He recently returned from a trip to Belize. His temperature is 38.3°C (100.9°F). Physical examination shows scleral icterus and tender hepatomegaly. Serum studies show markedly elevated transaminases and anti-hepatitis A virus antibodies. In this patient, infected cells express more MHC class I molecules on their surfaces. This cellular event is primarily induced by a molecule that is also responsible for which of the following changes?   (A) Upregulated expression of exogenously synthesized antigens   (B) Enhanced macrophage phagocytic function   (C) Activation of eukaryotic initiation factor 2   (D) Increased breakdown of intracellular RNA
['(D) Increased breakdown of intracellular RNA <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Upregulated expression of exogenously synthesized antigens \n (B) Enhanced macrophage phagocytic function \n (C) Activation of eukaryotic initiation factor 2 \n (D) Increased breakdown of intracellular RNA <> possible answers', '  A 23-year-old man comes to the physician because of a 1-week history of anorexia, nausea, upper abdominal pain, and dark-colored urine. He recently returned from a trip to Belize. His temperature is 38.3°C (100.9°F). Physical examination shows scleral icterus and tender hepatomegaly. Serum studies show markedly elevated transaminases and anti-hepatitis A virus antibodies. In this patient, infected cells express more MHC class I molecules on their surfaces. This cellular event is primarily induced by a molecule that is also responsible for which of the following changes? <> context@']