The (Real) Neurogenic/Gliogenic Potential of the Postnatal and Adult Brain Parenchyma

Table 2

Main differences between cell genesis in adult neurogenic sites and in the parenchyma.

	Neurogenic sites	Parenchyma
Location	Restricted	Widespread
Primary progenitor cells	Stem cells	Progenitors
Microenvironment	Stem cell niche	Mature parenchyma
Origin	Germinal layer derived	No direct link with germinal layers
Fate (progeny)	Mainly neurons (some astrocytes and oligodendrocytes)	Mainly glial cells (some neurons)
Fate (process)	Complete	Incomplete