Results 51 to 60 of about 3,201 (247)
Immunocompetence in Hydra. Epithelial cells recognize self-nonself and react against it [PDF]
, 1986 The evolution of effective immunologic defense mechanisms in multicellular organisms involves the ability of host cells to distinguish betweeen self and nonself and to react appropriately to eliminate foreign tissue.
Bosch, Thomas C. G., David, Charles N.
core +1 more source
Frontiers in Ecology and Evolution, 2019 The phylum Cnidaria contains a wide variety of unique organisms that possess interesting adaptations evolved over many years to help them survive in a competitive environment.
Casey A. Schmidt +2 more
doaj +1 more source
Not all jellyfish are equal: isotopic evidence for inter- and intraspecific variation in jellyfish trophic ecology [PDF]
, 2015 Jellyfish are highly topical within studies of pelagic food-webs and there is a growing realisation that their role is more complex than once thought.
Fleming, Nicholas E.C. +3 more
core +3 more sources
The Excitation of Nematocysts [PDF]
Journal of Experimental Biology, 1942 ABSTRACT Though an enormous amount of work has been done on nematocysts, the problem of how they are discharged remains unsolved. There are really two separate problems. First, what is the natural stimulus which excites the cnidoblast; second, what is the physical mechanism by which the nematocyst itself discharges? There is more work on
openaire +2 more sources
Venom proteome of the box jellyfish Chironex fleckeri. [PDF]
PLoS ONE, 2012 The nematocyst is a complex intracellular structure unique to Cnidaria. When triggered to discharge, the nematocyst explosively releases a long spiny, tubule that delivers an often highly venomous mixture of components.
Diane L Brinkman +5 more
doaj +1 more source
Transcriptome and venom proteome of the box jellyfish Chironex fleckeri [PDF]
, 2015 Background: The box jellyfish, Chironex fleckeri, is the largest and most dangerous cubozoan jellyfish to humans. It produces potent and rapid-acting venom and its sting causes severe localized and systemic effects that are potentially life-threatening ...
Brinkman, Diane L. +6 more
core +1 more source
Diversity and evolution of myxozoan minicollagens and nematogalectins [PDF]
, 2014 Background: Myxozoa are a diverse group of metazoan parasites with a very simple organization, which has for decades eluded their evolutionary origin. Their most prominent and characteristic feature is the polar capsule: a complex intracellular structure
Cartwright, Paulyn +5 more
core +3 more sources
New insights on the taxonomy of Diadumene paranaensis (Cnidaria: Actiniaria) associated with mangrove roots in the Brazilian semi-arid coast [PDF]
Anais da Academia Brasileira de CiênciasA dense estuarine aggregation of Diadumene paranaensis Beneti, Stampar, Maronna, Morandini & Da Silveira, 2015 associated with Rhizophora mangle L. was found at the Arpoeiras Beach, mouth of Acaraú River, Ceará, Brazilian semi-arid coast.
YAGO A. DE MELO +3 more
doaj +1 more source
Toxins, 2016 Jellyfish venoms are rich sources of toxins designed to capture prey or deter predators, but they can also elicit harmful effects in humans. In this study, an integrated transcriptomic and proteomic approach was used to identify putative toxins and their
Dalia Ponce +3 more
doaj +1 more source
Microbial arms race: Ballistic "nematocysts" in dinoflagellates represent a new extreme in organelle complexity [PDF]
, 2017 We examine the origin of harpoon-like secretory organelles (nematocysts) in dinoflagellate protists. These ballistic organelles have been hypothesized to be homologous to similarly complex structures in animals (cnidarians); but we show, using structural,
Gavelis, G.S +9 more
core +2 more sources