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. Author manuscript; available in PMC: 2007 May 7.
Published in final edited form as: Arch Environ Health. 2004 Aug;59(8):385–391. doi: 10.3200/AEOH.59.8.385-391

Fig. 1.

Fig. 1

Nitric oxide (NO) concentration changes with time in samples from 3 healthy (A, B, C) and 1 mildly asthmatic (D) adult subjects in 10 different used Sievers bags (numbered 1–10) stored at 22 °C exposed to ambient NO.