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Cytotoxicity of U87 exo, selumetinib, and U87-Selu exo of (a) C8-D1A (mouse normal brain cells), (b) U87MG (human glioblastoma cells), and (c) A549 (human lung cancer cells) cells at various concentrations. * p < 0.05, *** p < 0.001 vs. non-treated viability value of each data, n = 3. Data represented as mean ± SD.
