Now that Christmas is just around the corner, thoughts inevitably turn to an expectant Mary in the stable. However, she is not alone in the sphere of ...

but can also drive de novo centriole assembly in unfertilized eggs that initially lack centrioles. These studies offer a new perspective on the mechanisms that control centriole duplication.

The first step in the process of generating embryonic stem cells is to remove the nucleus from an unfertilized egg cell (A). Because the egg cell is only 100 micrometers, or one-tenth of a ...