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Tuberculosis (TB) is a chronic infectious disease caused by (MTB). Tuberculous granuloma is the central and key pathological structure of tuberculosis and is characterized by tissue hypoxia and ineffective drug delivery. To address these issues, this study fabricated a composite nanoparticle loaded with catalase (CAT) and levofloxacin (LEV) (CAT@LEV-NPs) and then combined it with ultrasound (US) to investigate the bactericidal effect and underlying mechanisms using TB spheroids.

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