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. 2017 Sep 6;6:e23435. doi: 10.7554/eLife.23435

Figure 3. Fine structure of the eye photoreceptor cell surface and co-expression of Las-xenopsin and Las-ropsin in the eye.

Figure 3.

(a) Schematic representation of eye structure based on serial section EM data. (b–d) EM micrographs of the apical surface of eye photoreceptor cells (PRCs). (b) Microvillar-like vertical extensions of the eye PRC. (c) Two cilia emerging from eye PRC (inset: cross section of eye PRC ciliary axonem showing 9 × 2 + 2 pattern). (d) Horizontal microvilli (arrows) emerging from eye PRC. (e) Rudimentary cilium of adjacent epidermal cell. (f1-3) Double in-situ hybridization shows that Las-xenopsin and Las-r-opsin are coexpressed in eye PRCs. (Scalebars: 2 µm in b–e, 5 µm in f). eC, epidermis cell cilium; MV, microvilli; N, Nucleus; PC, pigment cell; PG, pigment granules; rC, photoreceptor cell cilium.