Table 1.

The volume median diameter (VMD), mass mean aerodynamic diameter (MMAD) and geometric standard deviation (GSD) of IFN-γ aerosol droplets produced by the test devices (PDAP and Aerogen Solo). P-values < 0.05 were considered significant

Vibrating mesh type	VMD (μm)	MMAD (μm)	GSD (μm) based on MMAD values
PDAP	2.33 ± 0.02	2.79 ± 0.29	1.47 ± 0.07
Solo	4.39 ± 0.02	4.30 ± 0.25	1.90 ± 0.04
P-value	< 0.0001	0.0005	N/A