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Aggregation behavior of photoaged polystyrene nanoplastics in simulated lung fluids

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Polymers
Body Systems

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Toxicological effects of different particle sizes and types of nano-plastics (NPs) on human lung cells: implications for the health risk of airborne microplastic pollution

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Researchers exposed human A549 alveolar cells to polystyrene and polymethylmethacrylate nanoplastics of 30 and 50 nm and found that smaller size and higher concentration produced stronger cytotoxicity, oxidative stress, inflammation, and apoptosis—with PS nanoparticles more toxic than PMMA—providing in vitro evidence of respiratory health risks from inhaled airborne nanoplastics.

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