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Images obtained by transmission electron microscopy (TEM) of M. galloprovincialis gill biopsy exposed to NPs. (A) Control. (B) 10 μg/mL Hydrophilic CB-derived nanoparticles (HNP). (C) 50 μg/mL of P25. (D) 50 μg/mL of MT. Magnified fields with arrows indicate electron-dense particles in exposed cells. Arrowhead points to cytoplasmic vacuoles. 
indicates mitochondria.
