THE MUCOPROTEINS OF THE SNAILS, HELIX ASPERSA AND HELIX POMATIA
نویسندگان
چکیده
منابع مشابه
The Mucoproteins of the Snails, Helix Aspersa and Helix Pomatia
The problem of the structure of complex proteins containing carbohydrates in their molecule is still a subject of discussion. The fundamental questions which have been debated during the last decades and which have been the subject of many controversies are concerned with the nature of the carbohydrate group present in the molecule of these substances. Since the discovery of mucoproteins or muc...
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PAGE I . I n t r o d u c t i o n 3 2 8 I I . D e s c r i p t i o n o f t h e w e i g h t r h y t h m . . . . . . 3 2 9 I I I . R e l a t i o n t o a c t i v i t y . . . . . . . 3 3 1 I V . R e l a t i o n t o e n v i r o n m e n t a l v a r i a t i o n s 3 3 2 V . R e l a t i o n t o u p t a k e o f f o o d a n d w a t e r . . . . . 3 3 4 V I . B e h a v i o u r o f s n a i l s i n h u m i d a ...
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This paper studied the association between metals accumulation in selected tissues and the shell and antioxidant defence system in Helix aspersa snails. Accumulation of Zn, Fe, Pb, Cd, and Mg was organ-specific and was the highest in the hepatopancreas. Hepatopancreatic catalase and glutathione peroxidase activities were the highest, whereas the highest glutathione reductase activity was record...
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It is known that the activity of terrestrial pulmonates is connected in some way to the extensive and often rapid fluctuations in water content which are characteristic of these animals (Howes & Wells, 1934; Wells, 1944). The work of Hughes & Kerkut (1956) and Kerkut & Taylor (1956) has further shown that the activity of the pedal ganglion of slugs changes with the osmotic pressure of the bathi...
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The International Standardization Organization recently launched a soil toxicity test with snails (Helix aspersa). We assessed the sensitivity of this test for seven polycyclic aromatic compounds. Control animals had 100% survival and low variability for growth measurements. Maximum exposure concentrations of 2800 mg/kg (4000 mg/kg for acridine) had no effect on survival. Similarly, growth (bio...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1925
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)84833-5