Mycobacterium tuberculosis (Tuberculosis) Quiz: Ace Your Exams

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A 48-year-old female with a past medical history of HIV, polysubstance use, and recent incarceration presents with hemoptysis, fevers, and chills. She is admitted to the hospital with a presumptive diagnosis of infection with an acid-fast Gram positive aerobe. She subsequently undergoes a lung biopsy, which demonstrates the presence of this organism surviving within macrophage phagosomes. No fusion between macrophage phagosomes and lysosomes is observed. Which of the following virulence factors is responsible for this observed phenomenon?  

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