<unk> s <unk> s) are self-renewing, multipotent<unk> s that firstly generate the radial glial progenitor<unk> s that generate the neurons and glia of the nervous system of all animals during embryonic development. Some<unk>  progenitor<unk> <unk> s persist in highly restricted regions in the adult vertebrate brain and continue to produce neurons throughout life. Differences in the size of the central nervous system are among the most important distinctions between the species and thus mutations in the genes that regulate the size of the<unk>  compartment are among the most important drivers of vertebrate evolution.<unk> <unk> s are characterized by their capacity to differentiate into multiple<unk>  types. They undergo symmetric or asymmetric<unk>  division into two daughter<unk> s. In symmetric<unk>  division, both daughter<unk> s are also<unk> <unk> s. In asymmetric division, a<unk> <unk>  produces one<unk> <unk>  and one specialized<unk> .<unk> s primarily differentiate into neurons, astrocytes, and oligodendrocytes.
Neural stem cell
Stem cell
Progenitor cell
Hematopoietic stem cell
Hemangioblast
Trophoblast
Neuroblast
Cancer-associated fibroblast