New neurons are continuously generated in certain regions of the adult brai
n. Studies in rodents have shown that new neurons are generated from self-r
enewing multipotent neural stem cells. Here we demonstrate that both the la
teral ventricle wall and the hippocampus of the adult human brain harbor se
lf-renewing cells capable of generating neurons, astrocytes, and oligodendr
ocytes in vitro, i.e., bona fide neural stem cells. (C) 1999 Academic Press
.