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Cytotoxicity of different drug formulations in HNE1 and HNE1/DDP cells by MTT assays. Free DAS and THD-NPs on HNE1 (left panel) and HNE1/DDP (right panel) after 24 h and 48 h. The data represented as the mean ± SD (n = 3). ***p < .001, **p < .01, and *p < .05.
