A combination of mRNA and a new lipid nanoparticle could help heal damaged lungs, according to new research from the Perelman School of Medicine at the University of Pennsylvania. Viruses, physical trauma, or other problems can have a serious impact on the lungs, and when the damage is in the lower regions, traditional treatments, like inhaled medication, might not work. The study, published in Nature Communications, provides a proof of concept for an injectable therapy.