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Zusammenfassung:
In this issue of Neuron, Tsui-Pierchala et al. (2002) show that in rodent SCG neurons NGF activates Ret, the signaling component of the multisubunit GDNF receptor, in vitro and in vivo by a mechanism, which is independent of GFL ligands and GFRalpha coreceptors. NGF-dependent Ret phosphorylation regulates soma size and metabolism but not survival of maturing postnatal sympathetic neurons.