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Currently Emeritus Professor at Lyon Catholic University (UCLy) and Ecole Pratique des Hautes Etudes (EPHE), France, Jean-Marie Exbrayat obtained a PhD in 1977 at the University of Montpellier (France) and a D. Sci. in 1986 at Paris 6 University. He served as Dean of the Faculty of Sciences (UCLy)  between 1997 and 2005, Deputy Head of Research of UCLy  between 2007 and 2020).   He  was the head of a research unit during 29 years. His research concerns the reproductive biology of vertebrates (bony fish, amphibians, reptiles, mammals especially rodents) and some invertebrates, related to the environmental conditions comprising pollution, the endocrine regulation of reproduction and the embryonic development of rare animals. His research also concerns the importance of cell proliferation, differentiation and apoptosis in organ modeling. Among the methods used, histology was adapted to the study of preserved animals. Pr Exbrayat was the head of a specialized course in histology, and taught animal biology, physiology, histology, embryology, systemic biology, origin of life, history and philosophy of sciences. He supervised or co-supervised 28 PhD. He is the author or editor of 16 books, and numerous publications and communications in animal biology as well as in interdisciplinary works. He is a member of several scientific societies and international institute. He is editor-in-chief, member of editorial boards and reviewer for international journals, a co-editor of the collection "Science, History, Philosophy" published by the Editions Vrin, a French Publisher, and president of the Interdisciplinary Institute of Epistemological Studies (IIEE).