The BDP-PLGA nano-microcapsules co-loaded with BDP and fluorescein sodium were nebulised to guinea pigs,and their tissue section of lung were prepared to observe the pulmonary distribution of BDP nano-microcapsules with fluorescence microscope.

• 豚鼠雾化吸入3H-BDP-PLGA纳米微囊,取肺组织切片,荧光显微镜下观察肺内分布。