We compared survival of bone marrow mesenchymal stem cells after compressor, ultrasound, and mesh nebulization of the cell suspension over 10 min. Viability of stromal cells was best preserved after compressor nebulization (72%). Cell survival after ultrasonic nebulization was significantly lower (20%). After mesh nebulization, no live cells were found. Thus, compressor nebulization is the most preferable method of the production of cell aerosol for their delivery to the lower respiratory tract.
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