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Coexistence of neuropeptides in hydra
Neuroscience, 1983Using a technique for simultaneous visualisation of two antigens in one section, oxytocin-like immunoreactivity has been found to coexist with bombesin-like immunoreactivity in neurons of the basal disk, gastric region and tentacles of hydra. Neurons with oxytocin-like immunoreactivity in peduncle and hypostome, on the other hand, have little or no ...
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Science, 1973
Hydra were cut so that regenerates consisting only of the central gastric region were formed. This region, which has no natural opening to the environment, is capable of osmoregulation and of removing excess fluid from the gut. The fluid is excreted through a break in the body wall created as a result of a strong contraction when the gut is distended ...
Martin Macklin, Thomas Roma, Kevin Drake
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Hydra were cut so that regenerates consisting only of the central gastric region were formed. This region, which has no natural opening to the environment, is capable of osmoregulation and of removing excess fluid from the gut. The fluid is excreted through a break in the body wall created as a result of a strong contraction when the gut is distended ...
Martin Macklin, Thomas Roma, Kevin Drake
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Wilhelm Roux’ Archiv für Entwicklungsmechanik der Organismen, 1936
1. The indifferent interstitial cells divide by mitosis. 2. This mitosis occurs within the nuclear area but not inside the nuclear membrane. 3. Centrioles are present and appear to be enclosed within the nuclear membrane during the early telephase. 4.
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1. The indifferent interstitial cells divide by mitosis. 2. This mitosis occurs within the nuclear area but not inside the nuclear membrane. 3. Centrioles are present and appear to be enclosed within the nuclear membrane during the early telephase. 4.
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Trends in Neurosciences, 1979
Abstract Four materials have been isolated in Hydra which, respectively, act as foot activators, head activators, foot inhibitors, or head inhibitors. The activators are peptides with possible neurotransmitter/neuromodulator properties, whereas the inhibitors are non-peptides with possible hormonal functions.
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Abstract Four materials have been isolated in Hydra which, respectively, act as foot activators, head activators, foot inhibitors, or head inhibitors. The activators are peptides with possible neurotransmitter/neuromodulator properties, whereas the inhibitors are non-peptides with possible hormonal functions.
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Battling the bureaucracy hydra
Science, 2016“How hard can it be to write a contract?” I asked myself. After all, I had already overcome some long odds. Seven weeks earlier—just days before I was to fly to Brussels for the second evaluation phase of a European Research Council (ERC) Starting Grant application—the Icelandic volcano Eyjafjallajokull erupted, throwing enough ash into the sky to ...
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2017
IT-based systems used in the manufacturing environment, such as MES, must satisfy special requirements, which among other things also have consequences for the system structure. These include, for example, requirements arising from the horizontal and vertical integration we have described, from the production organization to be mapped, from ...
Jürgen Kletti, Rainer Deisenroth
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IT-based systems used in the manufacturing environment, such as MES, must satisfy special requirements, which among other things also have consequences for the system structure. These include, for example, requirements arising from the horizontal and vertical integration we have described, from the production organization to be mapped, from ...
Jürgen Kletti, Rainer Deisenroth
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Annual Review of Genetics, 2011
A hydra has a simple structure consisting of a head, body column, and foot along a single axis called the oral-aboral axis. The tissue dynamics of a hydra consist of a steady state of production and loss of tissue involving the entire animal. Axis formation and its maintenance is controlled by the head organizer, which is located at the apex of the ...
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A hydra has a simple structure consisting of a head, body column, and foot along a single axis called the oral-aboral axis. The tissue dynamics of a hydra consist of a steady state of production and loss of tissue involving the entire animal. Axis formation and its maintenance is controlled by the head organizer, which is located at the apex of the ...
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Polymethylmethacrylate nanoplastics effects on the freshwater cnidarian Hydra viridissima.
Journal of Hazardous Materials, 2021C. Venâncio +4 more
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Intramitochondrial crystals in Hydra
Journal of Ultrastructure Research, 1967Intramitochondrial crystals have been observed in sexual Hydra and in certain stages of regenerating Hydra . These unusual mitochondria are found specifically in epitheliomuscular cells. The crystals are located in the matrix of the mitochondria, are rhomboidal or rectangular, and their lattice pattern bears a strong resemblance to crystals observed
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