Table 1.

Hydrodynamic diameters of PS-PEG and PS-COOH NP in water or saline solutions with varying osmolality.

Infusate Solution		Water	0.9% Saline	3% Saline
Osmolality (mOsm/kg)		0	∼300	∼1000
Viscosity (cP)		0.89	0.90	0.94
Hydrodynamic Diameter ± SEM (nm)	PS-PEG	58 ± 0.2	61 ± 2	62 ± 0.5
	PS-COOH	51 ± 1	45 ± 2	1330 ± 370