In with the new and out with the old, goes the classic phrase, but it’s an action we do on average every four seconds that most of us take for granted as we inhale the new and expel the spent air. This simple action typically goes unnoticed and keeps us alive, but for the millions of people suffering from respiratory diseases, breathing is an omnipresent concern. For decades, scientists have looked for ways to recapitulate the complex nature of lung tissue, with the hope that they could provide a better understanding of diseases affecting the lungs.
