Congratulations to Jaime Fernandez MacGregor for this great PhD defense in front a jury composed by Ylva Ivarsson (Uppsala University), Katja Luck (Institute of Molecular Biology, Mainz), Raphael Guerois (CEA, Saclay), Gilles Travé (Strasbourg University), Renaud Vincentelli, Andreas Zanzoni and Christine Brun (Aix-Marseille University).