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Images showing criteria for discerning between co-localization of gene expression with integrated transplant tissue and endogenous expression. Light blue coloring indicates transplanted tissue and purple coloring indicates Otx2 expression via in situ hybridization. These specific examples are sections from the mid-gastrula sham surgery showing Otx2 expression (left) and the late gastrula sham surgery showing Otx2 expression (right).
