Table 3.

Percentage and log reduction of S. aureus viable count after DSPE-PEG-GNR and Chol-PEG-GNR treatments with and without laser at sub-MIC concentrations. Data are presented as mean ± SD (n = 3).

	Reduction of viable count (%)	Log reduction
DSPE-PEG-GNR
0.004 nM	91.0 ± 0.20	1.0
0.004 nM + Laser	98.0 ± 0.07	1.7
0.002 nM	93.8 ± 0.70	1.2
0.002 nM + Laser	99.0 ± 0.70	2.0
Laser	93.5 ± 2.2	1.2
Chol-PEG-GNR
0.125 nM	93.0 ± 4.2	1.1
0.125 nM + Laser	99.99 ± 0.003	4.0
0.06 nM	86.5 ± 2.1	0.87
0.06 nM + Laser	99.6 ± 0.14	2.4
Laser	93.5 ± 2.2	1.2