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. 2009 Oct 23;118(3):407–413. doi: 10.1289/ehp.0901398

Table 2.

Significant change in absorbance or fluorescence values (μg/ml Ag-nps/mL media) in control studies by assay.

No cell controla
Cell controlb
Ag-nps MTT aB 96AQ MTT aB 96AQ
Unwashed
 20 nm 1.7 1.7
 50 nm 0.34 1.7
 80 nm 1.7 1.7

Washed
 20 nm 0.34 1.7c
 50 nm 1.7 1.7
 80 nm 1.7 1.7 1.7

Carbon-coated
 25 nm 1.7 1.7 1.7
 35 nm 1.7 0.34 1.7

No change in absorbance or fluorescence value was found, indicating a lack of interaction between assay and Ag-nps.

a

No cell control value at which a significant increase in absorbance or fluorescence was observed (p < 0.05).

b

Cell control value at which a significant increase in absorbance was observed before and after Ag-nps (p < 0.05).

c

A significant decrease was observed for this data set.