From: The oxidative potential of differently charged silver and gold nanoparticles on three human lung epithelial cell types
NPs (μg/cm 2 )
A549
BEAS-2B
NHBE
0
0.05
1**
−0.20
−0.2
0.1
−0.33
1
0.2
0.87*
0.07
0.60
0.4
0.47
0.8
1*