Fig. 6From: Aerosol drug delivery to the lungs during nasal high flow therapy: an in vitro studyMan+Leu retention. a: Capsule b: Handihaler c: Cannula+connection tube d: Replica. Data are presented as mean ± SEM (n = 3). Statistically significant results are marked with asterisks (*). A single asterisk indicates p ≤ 0.05. Two asterisks indicate p ≤ 0.01Back to article page