The path of primordial germ cells illustrates the complexities ... functional gametes that make it possible for the cycle of life to perpetuate generations of animal species.

Accumulating evidence indicates that epigenetic modifiers have key roles in genome-wide reprogramming and activation and repression of specific genes during mammalian germ-cell development.

This very short life cycle makes these animals ideal for a study aiming to assess how various factors affect lifespan. By ...