Table 1. Internalization of silica nanospheres by bacterial cells following EMF exposures.
| Silica nanospheres 23.5 nm | 46.5 nm | |||
|---|---|---|---|---|
| Bacterial strains | Loading capacity* | Bacterial cells that internalised nanospheres(%) | Loading capacity* | Bacterial cells that internalised nanospheres (%) |
| P. maritimus KMM 3738 | 172 ± 8 | 97 ± 5 | 75 ± 8 | 80 ± 9 |
| S. aureus ATCC 25923 | 161 ± 8 | 99 ± 4 | 81 ± 8 | 40 ± 7 |
| S. aureus CIP 65.8T | 261 ± 8 | 99 ± 3 | 114 ± 8 | 44 ± 7 |
| S. epidermidis ATCC 14990T | 211 ± 8 | 99 ± 5 | Not detected | Not applicable |
*per single bacterium
Nanosphere loading capacity was calculated using the fluorescence intensity of nanospheres. The number of bacterial cells that were able to internalize the nanospheres, expressed as a percentage, was calculated by counting fluorescent cells in the CLSM images. Data are means ± standard deviation (SD) and are representative of 3 independent experiments.