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This article is about the organic structure. For the solar phenomenon, see Spicule (solar physics). For the glass particles, see Spicule (glass manufacture).
Microscopic view of copulatory spicule[1] in a nematode (Eucoleus aerophilus). Bar = 50 µm
Microscopic view of spicules of sponge

Spicules are tiny spike-like structures of diverse origin and function found in many organisms, such as the copulatory spicules of certain nematodes or the grains on the skin of some frogs. In sponges, spicules perform a structural function. Spicules are a very important part of many organisms.

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  1. ^ Lalošević, V.; Lalošević, D. A.; Čapo, I.; Simin, V.; Galfi, A.; Traversa, D. (2013). "High infection rate of zoonotic Eucoleus aerophilus infection in foxes from Serbia". Parasite 20: 3. doi:10.1051/parasite/2012003. PMC 3718516. PMID 23340229.  edit