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. Author manuscript; available in PMC: 2022 Jan 25.
Published in final edited form as: Int J Pharm. 2020 Dec 2;593:120121. doi: 10.1016/j.ijpharm.2020.120121

Figure 1.

Figure 1

In vitro aerosol performance testing apparatus [45]. The Alberta Idealized Throat was utilized to obtain a reasonable approximation of vaccine powder deposition in the human oral cavity and pharynx (mouth-throat) region. The Next Generation Impactor consists of seven stages and a micro-orifice collector (MOC) for assessment of particle size distribution.