The aims of the workpackage: The objective of WP3 is to provide an overview of policy formation and deliberation across a number of regions and across a relatively broad timeframe (late 1980s to the present). As a mapping exercise it is intended to provide an initial comparative framework for further elaboration in more detailed country and regional case studies. WP3 offers a ?helicopter view‘ of global xenotransplantation (XTP) regulation and landmark policy events. It provides a history of the development and timeline of policy-making combined with an initial scoping of the place and purpose of consultative and deliberative processes. In so doing, the WP provides a means of initial orientation for future comparative work and more in depth case studies. The WP is in no sense intended to be comprehensive but instead provides an initial means of developing a more focussed comparative method and body of questions to be taken up in the project‘s future workpackages.