Dr. Aldo Stivala was born in Regalbuto (Enna) on January 19, 1956. - 1986 Degree in Biological Sciences at the University of Catania. - 01/03/1983 to 15/06/1990, fellow of the CNR, at the Institute of Microbiology of the University of Catania. - 1989 he attended the Max-Planck Institut für Zellbiologie Rosenhof Ladenburg bei Heidelberg Germany directed by Prof. Peter Traub. - 21/11/1990 Postgraduate Diploma in Microbiology and Microbiological Techniques. The scientific activity carried out concerns research in the field of microbiological, clinical and applied diagnostics. - 01/11/2002, Confirmed Researcher at the Faculty of Medicine and Surgery of the University of Catania.