Primordial germ cell development in zebrafish.
In sexually reproducing organisms, primordial germ cells (PGCs) give rise to gametes that are responsible for the development of a new organism in the next generation. These cells follow a characteristic developmental path that is manifested in specialized regulation of basic cell functions and behavior making them an attractive system for studying cell fate specification, differentiation and migration. This review summarizes studies aimed at understanding the development of this cell population in zebrafish and compares these results with those obtained in other model organisms.