Lateral Flow Device (IMAGE) University of Exeter Caption The lateral-flow device (LFD) detects invasive pulmonary aspergillosis, a notoriously difficult to diagnose disease caused by the fungus Aspergillus. Credit University of Exeter Usage Restrictions None License Licensed content 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.