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. Author manuscript; available in PMC: 2008 Apr 30.
Published in final edited form as: Dev Biol. 2007 Feb 7;305(1):103–119. doi: 10.1016/j.ydbio.2007.01.040

Figure 1.

Figure 1

Side views of 16- and 32-cell stage (CS) Xenopus embryos noting the positions of the two blastomeres manipulated in the described experiments (D1.1, V2.1.1). The 32-cell embryo shows four of the eight blastomeres that are highly retinogenic (orange), and the one that is slightly retinogenic (yellow); asterisk indicates the most retinogenic cell. Several other blastomeres are competent to form retina but normally do not (green) and vegetal blastomeres are not competent to make retina (blue).