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While the Tc-leo is expressed in the retinal photoreceptors of the lens eyes, Tc-neo is expressed in the neuropil. The green areas depict the rhopalial in situ hybridization colorimetric staining pattern of the Tc-leo and blue areas represent Tc-neo (A, side view and B, top view). Upper lens eye (ULE), lower lens eye (LLE), slit eye (SE) and pit eye (PE).
