Results 161 to 170 of about 5,659 (211)

Metal binding by Helix aspersa blood

Comparative Biochemistry and Physiology Part A: Physiology, 1981
Abstract 1. 1. A technique is described for measuring the ultrafilterable and non-ultrafilterable fractions of metals in the blood of the snail H. aspersa . 2. 2. The degree of metal binding is similar to that of chelating agents such as EDTA. 3. 3.
B. Howard, K. Simkiss
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Observations on Reproduction in Helix aspersa

American Midland Naturalist, 1962
There are five distinct periods involved in the life history of Helix aspersa. This study is concerned with those portions of the reproductive cycle which are grossly visible, and particularly with the time involved in each period. Preliminary maneuvering averages 30 minutes, and subsequent copulation time 6.5 hours.
Fred Herzberg, Anne Herzberg
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Calcium mobilisation during reproduction in snail Helix aspersa

Nature, 1977
THE land snail Helix aspersa lays up to 100 eggs at a time, each with 0.6 mg of calcium in the form of calcite crystals. There is insufficient calcium in any part of the reproductive tract to account for this.
A S, Tompa, K M, Wilbur
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Tissue buffering in the snail, Helix aspersa

Comparative Biochemistry and Physiology, 1970
1. 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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Nerve-muscle junction in the snail Helix aspersa

Comparative Biochemistry and Physiology, 1966
Abstract The nerve-muscle junction in Helix muscle is a simple band-like structure lying on the surface of the muscle fibre.
G A, Kerkut, M, Woodhouse, G R, Newman
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Gut endocrine cells in the snail Helix aspersa

General and Comparative Endocrinology, 1988
A microscopic study of the endocrine cells present in the gut of the snail Helix aspersa is made. Electron microscopy is necessary in most cases to identify the enteroendocrine cells, since neither silver impregnations nor immunocytochemical staining have rendered positive results. Endocrine cells are scarce and rest on the basement membrane.
Y, Alba, A C, Villaro, P, Sesma, J J, Vázquez, A, Abaurrea   +4 more
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Pinocytosis in eyes of a snail, Helix aspersa

Journal of Ultrastructure Research, 1982
Extirpated 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 ...
R M, Eakin, J L, Brandenburger
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L'escargot Helix aspersa. Biologie - élevage

1990
90 ref. annexes 16 P.
Bonnet, J.C., Aupinel, Pierrick, Vrillon, J.L.   +2 more
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Helix aspersa Müller in Holland

1912
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Aminopeptidase activities present in tissues of Helix aspersa

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1991
1. Tissues of Helix aspersa have been examined for the presence of aminopeptidase activities. 2. Enzyme activities were detected using synthetic peptide substrates containing the fluorescent leaving group 7-amino-4-methyl coumarin. The methods used included continuous fluorimetric assay and activity staining of enzymes in non-denaturing polyacrylamide ...
Ennis, M.P., Irvine, Brent, Williams, C.H.   +2 more
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