Muriel MERCIER-BONIN is INRAE Research Director in ToxAlim Toulouse. Until 2012, she carried out her research activities at the Toulouse Biotechnology Institute (ex-LISBP) INSA Toulouse on the interaction mechanisms between microorganisms and surfaces. She then joined MICALIS in Jouy-en-Josas on the structural and functional role of mucus, a key player in intestinal homeostasis. Since 2014, in the Neuro-Gastroenterology and Nutrition team, she leads a research theme on the mucus/food contaminants/microbiota/host interrelationships in the digestive tract under physiological and pathophysiological conditions. She currently works on the impact of micro- and nano-plastics on human health, with a focus on the digestive sphere.