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Fig. 4 | BMC Genomics

Fig. 4

From: Identification of putative olfactory G-protein coupled receptors in Crown-of-Thorns starfish, Acanthaster planci

Fig. 4

Anatomical and microscopic analysis of COTS sensory organs. a COTS showing one arm lifted to reveal tube feet and sensory tentacles. b Left: Light microscope image of half a COTS arm tip showing region of tube feet and sensory tentacles. Right: SEM image of boxed area showing sensory tentacles (yellow) and tube feet (red). c SEM imaging of COTS tube foot and a sensory tentacle. d Histological staining (H&E) and (e) schematics showing characteristic tissue layers of COTS tube foot and sensory tentacle organs. AE adhesive epidermis; NE Non-adhesive epidermis; CL connective tissue radial laminae; CT connective tissue layer; D disc; S stem; L water-vascular lumen; M myomesothelium; NP nerve plexus; C cuticle; E epidermis. Scale bars = 200 μm unless otherwise marked

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