Figure 11From: Molecular characterization and embryonic origin of the eyes in the common house spider Parasteatoda tepidariorum Embryonic expression of orthodenticle homologues in the head of P. tepidariorum. (A to E) Expression of Pt-otd1 during head development. The arrowheads in D and E point to expression in the brain anlage underneath the non-neurogenic ectoderm. (F to J) Expression of Pt-otd2 during head development. Arrowheads in F to J denote Pt-otd2 expression in the non-neurogenic ectoderm, which ends up in the median eye anlagen. All embryos are shown in frontal aspect. The developmental stage is indicated in each panel in the lower left corner.Back to article page