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The Cell Biology of Nematocysts
1994Publisher Summary This chapter focuses on the cell biology of nematocysts. Nematocysts, the most widely used term to describe the “stinging capsules” characteristic of the phylum Cnidaria, constitute the best-studied and most diverse group of cnidae, the secretory products of cnidocytes.
G M, Watson, P, Mire-Thibodeaux
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Cytochemical Research on Coelenterate Nematocysts
Nature, 1955A NOTE by T. M. Yanagita and T. Wada1 suggesting, after C. H. Brown2, the possible keratin nature of coelenterate nematocysts has directed my attention to the subject. In 1952 I had observed the pronounced metachromatic colour produced by dilute thionin on large nematocysts from a siphonophore, Halistemma sp.
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Beachside preparation of jellyfish nematocyst tentacles
Toxicon, 1992A comparison of methods for preparing a jellyfish nematocyst suspension from sea nettle (Chrysaora quinquecirrha) fishing tentacles at the beachside was conducted. Autolysis of the tentacle followed by straining and sedimentation on ice was found to be a satisfactory technique.
J W, Burnett, K O, Long, H M, Rubinstein
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Zootaxa, 2006
Nematocysts (stinging organelles) are an important part of cnidarian identification, but the cnidomes of many species remain poorly known because of identification difficulties and confusing nomenclature. Currently, the cnidomes of 20 cubozoan species are documented in whole or in part (including four undescribed species and five newly described ...
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Nematocysts (stinging organelles) are an important part of cnidarian identification, but the cnidomes of many species remain poorly known because of identification difficulties and confusing nomenclature. Currently, the cnidomes of 20 cubozoan species are documented in whole or in part (including four undescribed species and five newly described ...
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Cobalt Staining OfActinia EquinaNematocysts
Stain Technology, 1978Nematocysts of Actinia equina are stained black by incubation in 2% CoCl2 followed by an aqueous wash and H2S treatment. They are also stained positively by morin. Nematocysts isolated from the acrorhage were found to have a high concentration of calcium of which only 30% was "free." It is suggested that the high concentration of calcium in the ...
Y J, Reid, M A, Edwards, M J, Connock
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Sea nettle Chrysaora quinquecirrha) nematocyst venom hemagglutinins
Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1983Abstract 1. Sea nettle nematocyst venom contains hemagglutinins specific for human and rabbit erythrocytcs. 2. These hemagglutinins exist as multiple molecular forms based on their behavior on DEAE cellulose and SDS-PAGE. 3. Hemagglutinin activity was not inhibited by several simple mono- and disaccharides, but was inhibited by dextran sulfate and ...
C S, Cobbs +3 more
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Fibrous Mini-Collagens in Hydra Nematocysts
Science, 1994Nematocysts (cnidocysts) are exocytotic organelles found in all cnidarians. Here, atomic force microscopy and field emission scanning electron microscopy reveal the structure of the nematocyst capsule wall. The outer wall consists of globular proteins of unknown function. The inner wall consists of bundles of collagen-like fibrils having a
T W, Holstein +5 more
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Chesapeake Science, 1974
Nematocysts were examined in specimens of the coronate scyphomedusaLinuche unguiculata collected off the North Carolina coast. The cnidome consisted of isorhizas and heterotrichous microbasic euryteles. The isorhizas were all of the a-isorhiza variety; euryteles were present in small and large size classes.
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Nematocysts were examined in specimens of the coronate scyphomedusaLinuche unguiculata collected off the North Carolina coast. The cnidome consisted of isorhizas and heterotrichous microbasic euryteles. The isorhizas were all of the a-isorhiza variety; euryteles were present in small and large size classes.
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Physalia Nematocysts: Utilized by Mollusks for Defense
Science, 1969Nudibranchs Glaucus and Glaucilla store and utilize for their own defense the nematocysts of the venomous siphonophore Physalia .
T E, Thompson, I, Bennett
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Leveraging Nematocysts Toward Human Care
2016The stinging cells of cnidarians contain nematocysts, which are a sophisticated ultra-fast injection system that can penetrate the skin immediately. This chapter will review two nematocyst-based biotechnology applications. The first hinders nematocyst discharge and thereby prevents jellyfish envenomation.
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