Age-dependent differences in the effect of GDNF andNT-3 on the development of neurons and glia from neural crest-derived precursors immunoselected from the fetal rat gut: expression of GFRa in vitro and in vivo. - Chalazonitis,A.; Rothman,T.P.; Chen,J-X.; Gershon,M. (Dev Biol, 1998)