Fig. 6.
SLPI activity against NE in nasal lavage fluid (NLF). NE was incubated with NLF from NS and SM for 20 min. After incubation, NE-specific chromogenic substrate was added and absorbance was measured. Data were normalized to the activity of no inhibitor and expressed as percent activity. n = 7 NS and SM. *P ≤ 0.05.