One of several findings was the discovery of a group of cells, likely unique to humans, that may help the heart respond to low oxygen levels.

New research in Sweden has produced a "blueprint" revealing how the human heart is built during prenatal development. It ...

All of us began as a single cell, the fertilized egg. This cell gave rise to a group of "stem cells" that can transform into any cell type in our body to create our complex tissues consisting of ...