Table 1. Evaluation of the cellular uptakes of CuO-NPs .

Cells	Exposure concentration (µg/mL/10 5 cells)	Cu amount (ng/10 5 cells)
HepG2	Negative control	140 ± 1.1
	10	356 ± 2.1
	25	528 ± 3.2
Caco-2	Negative control	148 ± 0.82
	10	302 ± 4.4
	25	289 ± 2.9