Table 1.

Characteristics of particle dispersions as measured by DLS

sample	Dispersant	dh a	PDIb
	water	55.4c (891.2)	0.22
ufTiO2	cell culture medium	57.5	0.33
	HBSS	164.2c (2018)	0.26
	Water	321.2	0.18
fTiO2	cell culture medium	448.6	0.16
	HBSS	936.6	0.64

^a number-average hydrodynamic diameter [nm]

^b polydispersity index

^c sample was filtered (450 nm microfilter) prior to experiment

in brackets: results of the comparable measurement of unfiltered sample