Asthma mucus mystery: scientists peek inside lungs to find clues

This study aimed to understand why some people with asthma develop mucus plugs in their airways. Researchers planned to use a thin, camera-guided tube to collect samples from the lungs of 60 adults—some with asthma and mucus plugs, some with asthma but no plugs, and healthy volunteers. The goal was to compare signs of inflammation, like certain immune cells and gene activity, between these groups. However, the study was withdrawn before any participants were enrolled.