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Contribution to the Diversity of the Genus <i>Sarcophaga</i> (Diptera: Sarcophagidae): Checklist, Species Distribution, and New Records for Greece. [PDF]
InsectsZafeiriou S +4 more
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Pinocytosis in eyes of a snail, Helix aspersa
Journal of Ultrastructure Research, 1982Extirpated eyes of the snail Helix aspersa , from which lenses were removed surgically, were incubated in horseradish peroxidase (HRP) and prepared cytochemically for electron microscopy to determine the positions of HRP. There was some internalization of tracer by pinocytic vesicles and tubules in Type I sensory cells and much uptake by Type II ...
Richard M. Eakin, Jean L. Brandenburger
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Autofluorescence in the retina of a snail, Helix aspersa
Vision Research, 1978Microvilli (presumed photoreceptoral organelles) and masses of microvesicles, called photic vesicles, in the eyes of a garden snail (Helix aspersa) autofluoresce under u.v. illumination. The fluorescence lasts 20–30 sec. Under the same experimental conditions and procedures the outer segments of rods and cones of the frog Xenopus laevis (control ...
Richard M. Eakin, Jean L. Brandenburger
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K + Channels in Cardiomyocytes of the Pulmonate Snail Helix
Journal of Membrane Biology, 2004We used the patch-clamp technique to identify and characterize the electrophysiological, biophysical, and pharmacological properties of K(+) channels in enzymatically dissociated ventricular cells of the land pulmonate snail Helix. The family of outward K(+) currents started to activate at -30 mV and the activation was faster at more depolarized ...
Tatiana A. Safonova +4 more
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Surfactant in the Gas Mantle of the SnailHelix aspersa
Physiological and Biochemical Zoology, 1999Surfactant occurs in cyclically inflating and deflating, gas-holding structures of vertebrates to reduce the surface tension of the inner fluid lining, thereby preventing collapse and decreasing the work of inflation. Here we determined the presence of surfactant in material lavaged from the airspace in the gas mantle of the pulmonate snail Helix ...
Daniels, Christopher B. +5 more
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Channels activated by stretch in neurons of a helix snail
Canadian Journal of Physiology and Pharmacology, 1992Single-channel recordings from central neurons of the helix snail, Cepaea nemoralis, revealed two types of channels that could be activated by stretch (i.e., by the membrane deformation produced when suction is applied to the patch pipette). One, a K+ channel (58 pS in physiological solution), was evident in excised and cell-attached patches.
Elaine Bédard, Catherine E. Morris
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CO2 chemoreception in the pulmonate snail, Helix aspersa
Respiration Physiology, 1993We have studied the response of the pneumostome to CO2, O2 and combined CO2 and O2 in intact snails. We found that pneumostomal opening increases in response to both hypercapnia and mild hypoxia. We determined which neural structures were essential for the pneumostomal response to CO2 by eliminating parts of the nervous system: the subesophageal ...
James C. Leiter, Joseph S. Erlichman
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Tissue buffering in the snail, Helix aspersa
Comparative Biochemistry and Physiology, 19701. 1. Changes in the concentrations of calcium and bicarbonate in the blood of hydrated Helix aspera, exposed to raised tensions of carbon dioxide or injected with HCl, NaHCO3 or CaCl2, were qualitatively those to be expected if the blood were in equilibrium with solid calcium carbonate. 2. 2.
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