Figure 7.

Histology scores for transplants at late neurula stage. Histological sections were scored for expression levels of regional marker genes, both correct “New On” expression (A) and ectopic “Old Off” expression (B). Horizontal black lines represent the mean, and error bars represent the SEM. ** p < 0.01. N for each gene and condition is indicated along the x-axis in gray. Late gastrula rotated embryos have significantly lower levels of correct marker gene expression than mid-gastrula sham embryos (p = 0.0077) and mid-gastrula rotated embryos (p = 0.0018).