Figure 3F-E11. Copyright: Reprinted with permission from the Society for Neuroscience from [doi:10.1523/JNEUROSCI.4489-07.2008] J Neurosci 23; 28: 963-75. Baudet C; Pozas E; Adameyko I; Andersson E; Ericson J; Ernfors P, "Retrograde signaling onto Ret during motor nerve terminal maturation." Copyright 2008. [PMID:18216204]