Microendoscope (IMAGE) Optica Caption A new endoscope about the thickness of a human hair uses a multimode fiber (MMF) for fluorescence imaging and fiber optic sensor (FOS) for photoacoustic imaging. Credit Emmanuel Bossy, CNRS/ Université Grenobe Alpes Laboratoire Interdisciplinaire de Physique 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.