Figure 1C. Copyright: Reprinted with permission from Cell Press from [doi:10.1016/j.neuron.2004.10.032] Neuron 44: 623-36, Enomoto H; Hughes I; Golden J; Baloh RH; Yonemura S; Heuckeroth RO; Johnson EM Jr; Milbrandt J, "GFRalpha1 expression in cells lacking RET is dispensable for organogenesis and nerve regeneration." Copyright 2004. [PMID:15541311]