This epilogue reflects on the ways in which the biomedical odysseys documented in the book open up important questions about the contours of experimentality and the proliferating hopes generated by transnational regenerative medicine. It returns to the metaphor of “cutting edge” in order to illuminate how the experiences of Chinese neurosurgeons and their foreign patients deepen our understanding of the multiple and material ways in which hope transforms technology, travel, and the political economies of health care and medical research in a digitally mediated world. Many of the fetal cell pioneers mentioned in the preceding chapters died during the decade that the author spent researching and writing this book. Their poignant yet grueling encounters with the experimental demand our acknowledgment of the complex ways in which hope endures online and through bodily engagements on the cutting edge of regenerative medicine.