2024 No Particulate matter from indoor environments of classroom induced higher cytotoxicity and leakiness in human microvascular endothelial cells in comparison with those collected from corridor https://onlinelibrary.wiley.com/doi/full/10.1111/ina.12341 Chua, M. L. Asia Experimental Observational Particulate Matter (PM) Bacteria Cardiovascular Corridor environment Cytotoxicity Endothelium Indoor environment Particulate matter (PM) PM from classrooms and corridors was analyzed for size, composition, and toxicity in endothelial cells. Indoor PM had higher endotoxin levels and caused greater oxidative stress and barrier disruption, suggesting higher health risks from indoor exposure. 2016