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