Machine generated contents note: Introduction / Martin Richards, Guido Pennings, and John Appleby -- The biology of donation / Martin H. Johnson -- Ethics for reproductive donation / Robert Klitzman -- Parenthood : whose right is it anyway? / Anja Karnein -- Reproductive donation : global perspectives and cultural diversity / Zeynep B. Gürtin and Effy Vayena -- UK and USA perspectives on the regulation of gamete donation / Theresa Glennon -- Gamete and embryo donation : a legal view from Spain / Yolanda Garcia-Ruiz and Diana Guerra-Diaz -- The legal and ethical regulation of transnational donation / Guido Pennings and Zeynep B. Gürtin -- Balancing ethical criteria for the recruitment of gamete donors / Guido Pennings, Effy Vayena, and Kamal Ahuja -- Challenges in intra-family donation / Effy Vayena and Susan Golombok -- ARTs and the single parent / Susanna Graham and Andrea Braverman -- Reproductive donation and justice for gay and lesbian couples / John Appleby, Sarah Jennings, and Helen Statham -- Is disclosure in the best interests of the children conceived by donation? / John Appleby, Lucy Blake, and Tabitha Freeman -- Identifiable donors and siblings : implications for the future / Tabitha Freeman, John Appleby, and Vasanti Jadva -- Ethical issues in embryo donation / Fiona MacCallum and Heather Widdows -- Reproduction through surrogacy : the UK and USA experience / Andrea Braverman, Polly Casey, and Vasanti Jadva -- Some conclusions regarding the interaction of normative and descriptive elements in reproductive donation / Guido Pennings.