Figure 5
Scanning electron microscopy image of BDP particles either as delivered directly from the device on a glass slide [I a, II a] or in the stage of partial dissolution after incubation for one hour at 37°C with human bronchial fluid [I b, II b]. [I a] BDP particle as delivered from the Sanasthmax®/Becloforte™ formulation propelled by hydrofluoroalkane (HFA), [I b] HFA-BDP particles delivered from the Sanasthmax®/Becloforte™ formulation after incubation with human bronchial fluid at 37°C for one hour, [II a] HFA-BDP particles as delivered from the Ventolair®/Qvar™ formulation, [II b] HFA-BDP particles delivered from the Ventolair®/Qvar™ formulation after incubation with human bronchial fluid at 37°C for one hour.