50.4 MB (50.0 MB compressed)
5265 x 3343 pixels
44.7 x 28.2 cm ⏐ 17.6 x 11.1 in (300dpi)
PASCAL MARSEAUD, ISM / SCIENCE PHOTO LIBRARY PASCAL MARSEAUD, ISM / SCIENCE PHOTO LIBRARY
Artwork of a cross-section through a healthy (at left) and asthmatic lung airway (bronchus). The healthy airway has a wide lumen (core) through which breathing can occur normally. The inflamed asthmatic airway has a narrowed lumen following contraction of the outer muscle layer (red) and swelling of the mucous lining, leading to congestion and impaired breathing. Asthma may be due to an allergy.
Model release not required. Property release not required.