Fig3B. Copyright: Reprinted with permission from Elsevier from [doi:10.1016/j.ydbio.2008.01.002] Dev Biol 315: 448-458, Waimey KE; Huang PH; Chen M; Cheng HJ, Plexin-A3 and plexin-A4 restrict the migration of sympathetic neurons but not their neural crest precursors. Copyright 2008 [PMID:18262512]