“…2C) (Mishima and Tomarev, 1998;Esteve and Bovolenta, 1999;Sahly, et al, 1999;Kobayashi, et al, 2000;Pandur and Moody, 2000;McLarren, et al, 2003;Bessarab, et al, 2004;Schlosser and Ahrens, 2004;Litsiou, et al, 2005). Simultaneously, precursors for all placodes become concentrated in the Six/Eya + territory to form a contiguous, unique domain: the preplacodal region (Streit, 2002;Bhattacharyya, et al, 2004) (Fig.…”