Fig 3. Transport rate of budesonide when applied in solution on cells in submersed culture (SLE) and on cells at an air-liquid interface (ALE).

Abbreviations: SLE mix, ALE mix: mixture containing 50 μM budesonide and 0.5 mM formoterol fumarate was applied (n = 3). The total amount of drug applied to the cells was set as 100% and the transport rate was normalized to a membrane area of 1 cm².