Researchers found a unique immune cell plays a key role in the chronic inflammation and scarring in the lungs and skin of people with scleroderma, or systemic sclerosis. After injecting mice with biodegradable PLG nanoparticles, which are used in medical sutures, researchers found that the nanoparticles specifically targeted these inflammatory cells and prevented skin and lung fibrosis. Researchers say it's a promising step towards targeted treatment for patients with early scleroderma.