Figure 4F. [doi:10.1083/jcb.200202024] Copyright: This image is from Gallo R; Zazzeroni F; Alesse E; Mincione C; Borello U; Buanne P; D'Eugenio R; Mackay AR; Argenti B; Gradini R; Russo MA; Maroder M; Cossu G; Frati L; Screpanti I; Gulino A, "Ren: a novel, developmentally regulated gene that promotes neural cell differentiation." J Cell Biol 2002; 158: 731-40 [PMID:12186855] , and is displayed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License http://creativecommons.org/licenses/by-nc-sa/3.0/.