Results 171 to 180 of about 4,699 (195)
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Motor organization in pharynx of Helix pomatia
Journal of Neurophysiology, 1984Identified motor neurons in the buccal ganglia of Helix pomatia and pharynx muscles innervated by them were studied with intracellular recording and cobalt staining. Retrograde cobalt staining via the buccal nerves indicated that neurons occupy relatively constant positions within the ganglia.
U. Altrup, M. Peters
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Adaptation in Helix pomatia neurons
Comparative Biochemistry and Physiology Part A: Physiology, 1987Abstract 1. 1. Spike frequency adaptation has been studied on neurons of Helix pomatia subesophageal ganglia and interpreted by means of a behavioural model describing the phenomenon in neurons either silent or autorhythmic at rest. 2. 2. At low stimulating currents the initial discharge frequency F (0) is linearly related to the current ...
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Copper and nutrition in Helix pomatia (L.)
Oecologia, 19791. In Helix pomatia the efficiency of assimilation of both food (lettuce) and copper is always high, even when the food has been artificially enriched with copper. In short-term feeding experiments with lettuce containing 1390 (±420)ppm copper about 97% of the metal ingested remains in the snail. 2.
Wolfgang Wieser, Helmut Moser
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The effect of veratridine on Helix pomatia neurones
Pfl�gers Archiv European Journal of Physiology, 19711. The effect of veratridine on the electrical properties of giant neurones in the sub-oesophageal ganglion of the snail Helix pomatia has been investigated. 2. Veratridine (10−5 g/ml) caused a depolarization of 14–30 mV. Some of the cells showed slow oscillatory potential changes.
H. H. Wellhöner +3 more
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1987
Publisher Summary This chapter discusses the sulfatases from Helix pomatia. Sulfate esters are common metabolites, and their characterization can be aided by the use of a homogeneous, or highly purified, sulfatase of broad specificity as a hydrolyzing agent. The highly specific mammalian arylsulfatases are not suitable.
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Publisher Summary This chapter discusses the sulfatases from Helix pomatia. Sulfate esters are common metabolites, and their characterization can be aided by the use of a homogeneous, or highly purified, sulfatase of broad specificity as a hydrolyzing agent. The highly specific mammalian arylsulfatases are not suitable.
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Dissection of a Snail (Helix pomatia)
2016Availability: Roman snails (Helix pomatia) like places which are dark and damp. In spring and autumn, they are most active and easy to collect. When it’s dry or cold, they seal themselves up; they hibernate in winter and aestivate in summer. During these periods giant Ghana snail (Achatina sp.) can be purchased from zoos instead.
György Kriska +3 more
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Complex formation in the blood of Helix pomatia
Comparative Biochemistry and Physiology Part A: Physiology, 1983Abstract 1. 1. Complex formation between calcium, haemocyanin from Helix pomatia, d -lactate and succinate has been investigated by means of potentiometric titrations using iterative curve fitting procedures. 2. 2. Strong complexes containing more than two constituents could not be detected. 3. 3.
Ernst R. Werner, Bernd M. Rode
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The reversible reaction of cyanide with Helix pomatia haemocyanin
Biochimica et Biophysica Acta (BBA) - Protein Structure, 1972At low concentrations (< 150 μM) KCN does not remove copper from Helix pomatia haemocyanin. One cyanide ion replaces one oxygen molecule in the copper group, lowering the absorbance at 346 nm and the CD bands of haemocyanin between 300 and 800 nm.
M. De Ley, René Lontie
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Purine phosphoribosyltransferases in the hepatopancreas of Helix pomatia (Gastropoda)
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1975Abstract 1. 1. In hepatopancreas of a purinotelic snail, Helix pomatia, hypoxanthine-guanine phosphoribosyltransferase and adenine phosphoribosyltransferase were found; high activity towards xanthine was also present. 2. 2. The two enzymes differ considerably in their stability, optimal pH and temperature and in their inhibition by ...
J. Barankiewicz, M.M. Jeżewska
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Activation of vertebrate complement by Helix pomatia haemolymph
Developmental & Comparative Immunology, 1984Haemolymph plasma from the pulmonate snail Helix pomatia contains a constituent, not yet identified, which causes activation of vertebrate complement via the alternative complement pathway in fluid phase. The activation of vertebrate complement by snail plasma is closely analogous to the activation caused by cobra venom factor (CVF), the snake's C3b ...
Claus Koch, Hans Erik Nielsen
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