Marc Muller is currently a Senior Research Associate at the “Fonds National de Recherche Scientifique”, Principal Investigator at the GIGA Research Center, and Lecturer of Molecular and Cellular Biology at the University of Liège (ULG). He obtained his MSc in Chemical Sciences at the University of Liège, Belgium, in 1980 and was awarded in 1986 a Ph.D. in Chemical Sciences, specializing in DNA repair mechanisms at the same University of Liège. As a postdoctoral scientist in Germany, he was involved in studying gene regulation in various systems, before taking his present position and focusing on zebrafish embryo development and toxicology. He is the coordinator of the Biomedaqu project, supervisor of ESR2, and co-supervisor of ESR1. These projects aim to use the zebrafish as a model system for skeletal pathologies in humans and in fish. His research focuses on Developmental Biology, using the zebrafish as a model system and using molecular and genetic approaches. His main focus is on bone development and homeostasis, and his group is also studying more general perturbations of zebrafish physiology by physical (changes in gravity) or chemical treatments. Recent studies include studying the effects of food additives, endocrine disruptors, and mixtures thereof to better understand the intricate interactions between the various signaling pathways involved.