Yoni Baert (o1987) is a postdoctoral researcher in the Biology of the Testis research group. Research at Biology of the Testis focusses on finding a therapy that restores the fertility of sterile boys and men. The quote “No word makes me happier than the word “daddy” when it’s directed to me” indicates how big the emotional impact of having children can be on a human being. Not surprisingly, the inability to reproduce often causes social and psychological complications. Yoni aims to develop a culture system that restores the production of sperm in the laboratory– or “in-vitro spermatogenesis” using state-of-the-art 3D bioprinting technology in collaboration with Polymer Chemistry & Biomaterials group of UGent.