PIV NS2 Infection (image) University of North Carolina Health Care Caption Top series: Images show the elongated shape of cells transforming into a ball shape before they shed from the lining of the airway to cause obstruction, a key reason why RSV leads to bronchiolitis. Middle series: Cilia (red), the hair-like projections of epithelial cells, are eradicated in the RSV-infected cells. It is the cilia of healthy cells that move mucus out of the airway. Bottom series: Close up of cilia being ravaged during infection. Credit Rachael Liesman, Ph.D., UNC School of Medicine Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.