Table 1.

The hydrodynamic size and zeta potential of SiNPs in distilled water and DMEM at different time points

Time	Distilled water			DMEM
	Hydrodynamic sizes (nm)	Zeta potential (mV)	PDI	Hydrodynamic sizes (nm)	Zeta potential (mV)	PDI
0 h	107.21±1.32	−38.92±1.81	0.09±0.01	106.87±4.30	−34.83±1.78	0.08±0.03
3 h	109.83±0.53	−39.83±2.67	0.10±0.02	106.47±1.12	−36.28±1.99	0.10±0.01
6 h	107.37±2.14	−37.56±0.84	0.12±0.01	104.07±3.47	−36.36±1.35	0.09±0.02
12 h	108.32±1.11	−39.61±1.26	0.14±0.01	105.26±1.56	−35.20±0.98	0.12±0.01
24 h	108.37±1.14	−39.92±1.25	0.11±0.03	107.15±1.42	−36.66±2.35	0.10±0.02

Note: Data are expressed as mean ± SD from three independent experiments.

Abbreviations: DMEM, Dulbecco’s Modified Eagle’s Medium; PDI, polydispersity index; SD, standard deviation; SiNPs, silica nanoparticles.