RT Journal Article SR Electronic T1 How to make an alveolus JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 483 OP 485 DO 10.1183/09031936.00003308 VO 31 IS 3 A1 E. R. Weibel YR 2008 UL http://erj.ersjournals.com/content/31/3/483.abstract AB