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(a) Storage stability of SNAP in NORel-ETTs. The percent SNAP remaining was measured for NORel-ETTs stored under different storage conditions (−20°C, 4°C, 23°C, and 37°C). Error bars are excluded since they are on the order of data point size. (b) Average nitric oxide release measurements from 14.2 wt% NORel-ETT after 3-month storage at 23°C over the 7-day period (n = 3). NO, nitric oxide; NORel-ETT, nitric oxide-releasing endotracheal tube; SNAP, S-nitroso-N-acetylpenicillamine
