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Morphological changes in HUVECs observed under an electron microscope after 24 h of exposure to B[a]P and/ SiNPs. (A) Control group; (B) HUVECs exposed to DMSO (0.1%); (C) HUVECs exposed to B[a]P (1 μM); (D) HUVECs exposed to SiNP (10 μg/mL); (E) HUVECs exposed to B[a]P + SiNPs (10 μg/mL + 1 μM).
