Wittler, L., Saborowski, M., & Kessel, M. (2008). Expression of the chick Sizzled gene in progenitors of the cardiac outflow tract. Gene Expression Patterns, 8(6), 471-476. Retrieved from http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6W8W-4RY8SRB-2-F&_cdi=6665&_user=38661&_orig=browse&_coverDate=07%2F31%2F2008&_sk=999919993&view=c&wchp=dGLbVlz-zSkWA&md5=1d4fcf1199939192f9f4a3f23f008a2b&ie=/sdarticle.pdf.