1. Assessing the Social Impact of Genetic Biotechnologies: Evan Willis (La Trobe University Australia). 2. The Abortion Pill RU486: A Case of Organizational and Technological Change: Sharon Tabberer (Anglia Polytechnic University). 3. a Strange Bedfellowsa in the Laboratory of the NHS? An Institutional and Methodological Analysis of the new Science of Health Technology Assessment in the United Kingdom: Alex Faulkner (University of Bristol). 4. The Rhetoric of Prediction and Chance in the Research to Clone a Disease Gene: Paul Atkinson, Claire Bachelor and Evelyn Parsons (University of Wales, Cardiff). 5. Knowledge of the Body: Lay and Biomedical Understanding of Musculoskeletal Disorders: Helen Busby, Gareth Williams and Anne Rogers (University of Salford). 6. The Science and Politics of Medicines Regulation: John Abraham (University of Sussex). 7. Medical Pedigrees and the Visual Production of Family Disease in Canadian and Japanese Genetic Counseling Practices: Yoshio Nukaga and Alberto Cambrosio (McGill University, Canada). 8. Vital Comparisons: The Social Construction of Measurement in Health: Mel Bartley (University College, London) and David Blane (Charing Cross and Westminster Medical School, London).