This Biosafety Resource Book stems from experience gained in biosafety capacity development projects conducted by FAO and is based on the materials developed by the lecturers who have taught in the training courses organized to date. The Biosafey Resource Book was prepared in response to an expressed need, with the purpose of being used as a training tool in future activities. It also aims at providing biosafety regulators, policy-makers and members of national biosafety committees with reference materials that can be readily consulted beyond the training events, when the need arises. Special attention has been paid to avoid technical jargon and to keep the modules scientifically accurate as well as accessible to non-specialists.