1 Since the discovery in 1987 that NO was similar to endothelium derived relaxing factor (EDRF), 2 its importance in the regulation of body functions, including the respiratory tract ... overexpressed ...

Correspondence to Dr Ian M Balfour-Lynn, Department of Paediatric Respiratory Medicine, Royal Brompton Hospital, Sydney Street, London SW3 6NP, UK; i.balfourlynn{at}ic.ac.uk In a double-blind, ...