Fig1B. [doi:10.1002/dvdy.20723] Copyright: This image is from Lan Y; Ryan RC; Zhang Z; Bullard SA; Bush JO; Maltby KM; Lidral AC; Jiang R, "Expression of Wnt9b and activation of canonical Wnt signaling during midfacial morphogenesis in mice." Dev Dyn 2006; 235: 1448-54. Reprinted with permission of Wiley-Liss Inc. [PMID:16496313]