Table 4
The results of CFU counts after culturing on solid LB medium
Sample	CFU (cells mL−1)
	240 μg of the antibiotic per milliliter	3.7 μg of the antibiotic per milliliter
Control	4.8 ± 0.4 × 109	4.6 ± 0.5 × 109
NPs	3.6 ± 0.9 × 109	2.8 ± 0.6 × 109
Gm	0	1.8 ± 0.5 × 109
Gm + NPs	0	0.96 ± 0.5 × 109

Burygin et al. Nanoscale Research Letters 2009 4:794   doi:10.1186/1556-276X-4-794