On April 6th, the act of defense of the Doctoral Thesis of Edurne Peña Mendizabal, IDM predoctoral researcher, will take place. The thesis entitles: "Synthesis and evaluation of antigenic determinants for β-lactam allergy diagnosis". The thesis has been carried out under the supervision of Drs Ángel Maquieira Catalá and Sergi Morais Ezquerro. The defense will take place at 11:30 in the Hall room of the Technical School of Agricultural Engineering and the Natural Environment (ETSIAMN) in hybrid mode.