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Abstract

Members of the Phylum Cnidaria are characterized by the possession of cnidae, those curious, everting, intracellular organelles that have both startled and intrigued humans for thousands of years. The cnidae of some anthozoans (sea anemones, corals, etc.) are perhaps the largest intracellular secretion products yet discovered, with some reaching a length of over 100 μm. Of the three major categories discovered to date (nematocysts, spirocysts and ptychocysts), nemato-cysts remain the best known because of their remarkable stinging properties. In fact, the rapidity of death following human contact with some tropical cubo-medusans (Cleland and Southcott 1965) suggests that, on the basis of the quantity of venom delivered as a function of the victim’s body weight, certain cnidar-ians are among the most deadly organisms on Earth.

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© 1984 Springer-Verlag Berlin Heidelberg

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Mariscal, R.N. (1984). Cnidaria: Cnidae. In: Bereiter-Hahn, J., Matoltsy, A.G., Richards, K.S. (eds) Biology of the Integument. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-51593-4_6

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  • DOI: https://doi.org/10.1007/978-3-642-51593-4_6

  • Publisher Name: Springer, Berlin, Heidelberg

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