Structural Arrangement and Properties of Spicules in Glass Sponges

Figure 6

The 360° rotation of specimen of corporeal spicule of M. chuni in crossed polarizers. (a)–(d) Photos at each 45° of rotation. (e) Polishing section of the basalia spicule of M. chuni in crossed polarizers. Scale: (a)–(d) 20 μm; (e) 300 μm.

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(e)