Results 151 to 160 of about 2,342 (189)
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Studies on eye regeneration in a snail, Helix aspersa
Journal of Experimental Zoology, 1973AbstractPart I is a study of the fine structure of the regenerating optic tentacle of a pulmonate snail, Helix aspersa. Electron microscopy demonstrates marked similarity between regeneration and embryonic development of the eye and its photoreceptoral microvilli, lens‐forming secretory droplets, clear photic vesicles, neurites, pigment granules, and ...
R M, Eakin, M M, Ferlatte
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Snail mucus − glandular origin and composition in Helix pomatia
Zoology, 2017Apart from their well-known culinary use, gastropod species such as Helix, which have a hydrogel-like mucus, are increasingly being exploited for cosmetic, bioengineering and medical applications. However, not only are the origin and composition of these "sticky" secretions far from being fully characterized, the number and morphology of the mucus ...
Greistorfer, Sophie +6 more
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Structural studies on the galactan from the snail Helix pomatia
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 19901. The galactan of the snail Helix pomatia was subjected to two cycles of Smith-degradation and the resulting products were isolated by gel filtration and thin layer chromatography. 2. The structures of the low molecular weight oligosaccharides were elucidated being identical to those obtained from Lymnaea stagnalis galactan.
U, Knels, H, Bretting
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Repair of a Defect in the Shell of the Snail Helix aspersa
The Journal of Bone & Joint Surgery, 1957Findings of this study of the repair of a shell defect in the snail Helix aspersa are as follows: 1. The defect is filled by a glycoprotein matrix. 2. The mantle epithelial cells show changes which indicate that these cells secrete the glycoprotein matrix. 3. The matrix contains no demonstrable reticular fibers and few cells.
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Procedure of intracellular staining of neurons in the snail Helix pomatia
Journal of Neuroscience Methods, 1982Abstract A method is described for cobalt staining of single neurons. It is based on already-known procedures, particulary on the use of a cobalt lysine complex and of a silver-intensified whole-mount preparation. These methods are modified and adapted to neurons of the buccal ganglion of the snail Helix pomatia .
U, Altrup, M, Peters
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Transport of pinocytic vesicles in the eye of a snail, Helix aspersa
Cell and Tissue Research, 1983The heads of small adult snails, Helix aspersa, were injected with horseradish peroxidase (HRP) for one to five hours before extirpating the eyes and preparing them cytochemically for electron microscopy. There was internalization of tracer by pinocytic vesicles (pinosomes) at the bases of types-I and -II sensory cells, ganglion cells and, in lesser ...
J L, Brandenburger, R M, Eakin
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Toxic effects of cadmium on the garden snail (Helix aspersa)
Bulletin of Environmental Contamination and Toxicology, 1981Spreading treated municipal wastes on agricultural and forest lands is becoming an established method of disposal. However, there is concern about the deleterious effects of toxicants, particularly cadmium, in the sludges. Cadmium concentrations in sewage sludge have been reported as high as 1500 ppM.
L K, Russell, J I, DeHaven, R P, Botts
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Distribution and speciation of cadmium in the terrestrial snail,Helix aspersa
Bulletin of Environmental Contamination and Toxicology, 1979Cadmium is taken up by terrestrial snails living in an environment with a relatively high cadmium concentration. The metal becomes bound to protein with a molecular weight of approximately 22,000 daltons. This cadmium-protein complex concentrates in the digestive gland and is present in a form which is soluble in water, (though difficult to extract ...
M, Cooke +3 more
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Behavioral effects of opiates on the land snail Helix aspersa
Life Sciences, 1983The terrestrial snail Helix aspersa appears to have an endogenous opiate system involved with regulating its locomotor activities as well as its responses to tactile stimulations. In animals which were repeatedly injected with the same dose of morphine, tolerance developed. Injection of the opiate antagonist, naloxone, resulted in a gradual reversal of
W R, Burrowes, P, Assanah, G B, Stefano
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Structure of hemocyanin from garden snail Helix lucorum
Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 2010Hemocyanins are giant extracellular oxygen carriers in the hemolymph of many molluscs and arthropods with different quaternary structure. They are represented in the hemolymph of molluscs with one, two or three isoforms, as decameric, didecameric, multidecameric and tubules aggregates. We describe here the structure of the hemocyanin Helix lucorum (HlH)
Velkova, L. +6 more
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