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Figure 7 | BMC Genomics

Figure 7

From: High opsin diversity in a non-visual infaunal brittle star

Figure 7

Rhabdomeric opsin positive cells in decalcified arms of Amphiura filiformis, detected by confocal laser scanning microscopy. Double immunolocalisation of r-opsin (red) and acetylated alpha-tubulin (green). A. Transmission view of arm (arm) with tube feet (tf) and spines (sp). B. R-opsin positive cells reside in tube feet and radial nerve. C. Innervation of arm showing connection of the radial nerve (radn) to each tube foot nerve ring (tfnr) and spine nerve (spn). D. Tube feet show r-opsin protein (rop+) presence within middle and tip region. R-opsins are also detected within radial nerves. R-opsin positive structures within the radial nerve likely represent axonal/dendritic projections and no stained cell bodies were observed. Scale bars in A-D: 200 μm.

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