A new evolutionary definition of cell types is presented. Cell types are evolutionary units defined by common descent rather than phenotypic similarity, and characterized by their ability to evolve ...

As a fundamental unit of life, the cell is central to all of biology. Better understanding how complex cells evolved and work promises new revelations in areas as diverse as cancer research and ...

Can the process of aging be delayed or even reversed? Research has shown that, in human cell lines at least, it can. They also found that the regulation of two genes involved with the production of ...