Results 101 to 110 of about 2,652 (209)

NEMATOCYSTS OF MICROSTOMA

The Biological Bulletin, 1924
The nematocysts of Microstoma are derived from Hydra upon which Microstoma feeds. These ingested nematocysts are delivered to the mesoderm by the endoderm of the flatworm. Within the mesoderm an amœboid cell takes charge of each nematocyst and as it is transported to the surface orients it so that the "sting-thread" has its discharging pole directed ...
WM. A. KEPNER, JOHN F. BARKER
openaire   +2 more sources

Grouped vesicles from the Middle East

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, Volume 23, Issue 2, Page 212-217, February 2025.
Kaaja Mareile Baaske, Cord Sunderkötter, Andreas Montag   +2 more
wiley   +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, Chang, E Sally, Diamant, Arik, Huchon, Dorothée, Rubinstein, Nimrod, Shpirer, Erez   +5 more
core   +3 more sources

First results on qualitative characteristics and biological activity of nematocyst extracts from Chrysaora plocamia (Cnidaria, Scyphozoa) Primeros resultados sobre las características cualitativas y actividad biológica de extractos de nematocistos de Chrysaora plocamia (Cnidaria, Scyphozoa)

Latin American Journal of Aquatic Research, 2008
We performed qualitative and quantitative characterizations of the biological activity of nematocyst extracts from 30 specimens of Chrysaora plocamia collected off Huayquique, Iquique, Chile. After extracting the nematocysts from the jellyfish tentacles,
Marco A Vega, Juan P Ogalde
doaj  

Inhibitory Effect of Metalloproteinase Inhibitors on Skin Cell Inflammation Induced by Jellyfish Nemopilema nomurai Nematocyst Venom

Toxins, 2019
Jellyfish envenomations result in extensive dermatological symptoms, clinically named as jellyfish dermatitis, which can seriously affect the daily activities and physical health of people. Inflammatory response accompanies the whole process of jellyfish
Aoyu Li, Huahua Yu, Rongfeng Li, Song Liu, Ronge Xing, Pengcheng Li   +5 more
doaj   +1 more source

Comparative morphology and evolution of the cnidosac in Cladobranchia (Gastropoda: Heterobranchia: Nudibranchia)

Frontiers in Zoology, 2018
Background A number of shelled and shell-less gastropods are known to use multiple defensive mechanisms, including internally generated or externally obtained biochemically active compounds and structures.
Jessica A. Goodheart, Sabrina Bleidißel, Dorothee Schillo, Ellen E. Strong, Daniel L. Ayres, Angelika Preisfeld, Allen G. Collins, Michael P. Cummings, Heike Wägele   +8 more
doaj   +1 more source

A New Species of Zanclea innocens and New Record of Zanclea medusopolypata (Hydrozoa, Anthoathecata) from Japan

Taxonomy
Cnidarian jellyfish (Medusozoa) comprise approximately 3800 known species which play important roles for marine ecosystem. This study aimed to understand the diversity of cnidarian jellyfish and symbiosis among marine organisms.
Sho Toshino, Gaku Yamamoto, Yuichi Nozoe, Hisashi Akiyama   +3 more
doaj   +1 more source

Electron microscopy on the polyp of staghorn corals with special reference to its skeleton formation [PDF]

, 1968
The formation of skeletons is one of the most conspicuous characteristics of Scleroactinian corals. Naturally, many scholars have worked on this problem using either classical histological methods, such as Fowler (2), Boume (1), Krempf (11), Hayashi ...
Kawaguti, S., Sato, K.
core  

First record of the genus Staurocladia (Hydrozoa: Cladonematidae) in the Gulf of Mexico with the description of Staurocladia dzilamensis sp. nov., a new species of crawling hydromedusa

European Journal of Taxonomy
The Cladonematidae are a family of hydrozoans with a worldwide distribution and morphological adaptations for a benthic mode of life. Species of this family are characterized by high morphological variability, which has caused many taxonomical debates ...
José María Ahuatzin-Hernández, Pablo Alberto Hernández-Solís, Lorena Violeta León-Deniz   +2 more
doaj   +1 more source

Nematocysts in four species of corals [PDF]

, 1974
The types and d istribution of homatocysts in four coral species were studied. Of the 20 maj or categories or nematocysts recognized in the phylum enidaria, five types were encountered in these four corals. They were holotrichous isorhizas , atrichous
Wafar, M V M
core