An engineered model of human physiology hits an important milestone.
The critical shortage of organs isn’t going away. Revising the current guidelines about who should be a donor—and who should be a recipient—might save lives.
Tiny models of the brain are becoming more complex. When should the ethicists step in?
New drugs for fatty liver may offer the first skirmish in a growing epidemic.
If transplant organs could be kept fresher for longer, they could help thousands more on waitlists.
Miniature versions of organs help scientists understand disease and fine-tune treatments in ways that work in mice can’t match.
Peter L. Slavin and Timothy G. Ferris discuss the importance of research funding.