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INTERCOMPARISON OF EYE LENS DOSEMETERS
Radiation Protection Dosimetry, 2016An intercomparison of eye lens dosemeters has been conducted in terms of the quantity Hp(3). For the first time, besides photon radiation also beta radiation qualities were included. Three dosemeter types designed for the quantity Hp(3) and ten for Hp(0.07) took part in the intercomparison.
Behrens, R. +8 more
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Molecular interactions in the eye lens
Biochemical Society Transactions, 1991Introduction The lens is a cellular structure formed from elongated fibre cells aligning into concentric layers that stack together with the organization of a uni-axial crystal 111. Within the fibre cells, where protein turnover is low, protein components are packed together [2-41 with short-range order [S].
C, Slingsby +4 more
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Differentiation, 1980
In general terms embryonic induction involves the association of embryonic tissues and leads to tissue differentiation. It is one of the known essential processes leading to the normal development of embryos. However, despite its importance, very little is known about the mechanisms of inductive interactions.
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In general terms embryonic induction involves the association of embryonic tissues and leads to tissue differentiation. It is one of the known essential processes leading to the normal development of embryos. However, despite its importance, very little is known about the mechanisms of inductive interactions.
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2015
Both lens and facet eyes were “invented” multiple times throughout animal history. Lens eyes first emerged in the Paleozoic in vertebrates and octopi. However, lens eyes had already existed within cnidarians – mainly within highly poisonous box jellyfish. As fossils, these animals make their earliest appearance in the mid-Cambrian, or about 500 million
Georg Glaeser, Hannes F. Paulus
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Both lens and facet eyes were “invented” multiple times throughout animal history. Lens eyes first emerged in the Paleozoic in vertebrates and octopi. However, lens eyes had already existed within cnidarians – mainly within highly poisonous box jellyfish. As fossils, these animals make their earliest appearance in the mid-Cambrian, or about 500 million
Georg Glaeser, Hannes F. Paulus
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Hydroxylation of dehydroepiandrosterone in the eye lens
Biochimica et Biophysica Acta (BBA) - General Subjects, 1977Hydroxylation of the steroid hormone dehydroepiandrosterone in the calf lens is inhibited by carbon monoxide and stimulated by NADPH. The enzyme concerned was found to be membrane-bound. Although the enzyme resembles the liver mono-oxygenase system in these characteristics, the presence of cytochrome P-450 in the lens could not be proved by measuring a
A J, Vermorken +4 more
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Regeneration of the Lens of the Eye in the Rabbit
Nature, 1959IN a recent communication, Chanturishvili1 reports his re-investigation of the detailed embryology of the lens in Amphibia and refers to work on higher forms in his laboratory at Tiflis. He and his fellow-workers, in particular Sikharulidze2, are of the opinion that the lens fibres are derived from cells which are neural in origin, and which require ...
D S, STEWART, P G, 'ESPINASSE
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Medical & Biological Engineering & Computing, 1997
The complex electrical impedance of a goat eye lens is studied in the frequency range 10 mHz-10 Hz at room temperature, using a computer-controlled AC impedance system. AC impedance software (model 368, version 2.2) is employed to determine the total impedance and capacitance of the eye lens at various frequencies.
K S, Kohli +4 more
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The complex electrical impedance of a goat eye lens is studied in the frequency range 10 mHz-10 Hz at room temperature, using a computer-controlled AC impedance system. AC impedance software (model 368, version 2.2) is employed to determine the total impedance and capacitance of the eye lens at various frequencies.
K S, Kohli +4 more
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Glycogen in the Lens of Birds' Eyes
Nature, 1963IT is well known that the dry substance in the lens of vertebrate eyes is composed almost entirely of protein. I reported earlier1 the presence of a considerable quantity of glycogen in the lens of different species of birds. This substance was first detected with periodic acid–Schiff staining of the paper-electropherograms made from lens extract and ...
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The Intermediate Filament Systems in the Eye Lens
2004Publisher Summary This chapter describes the basic methods to purify important lens fractions and to track the distribution of IF proteins in the eye lens and their associated proteins. It also provides the description of the methods used for the preparation, sectioning, and examination of eye lenses.
Der Perng, Ming +6 more
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Permeability of the eye lens capsule of the bigeye tuna to nuclear eye lens proteins
Comparative Biochemistry and Physiology, 1970Abstract 1. 1. Protein was extracted from lens nuclei of bigeye and skipjack tunas, dolphin fish and one species of squid. 2. 2. Total concentration and electrophoretic characteristics of the protein were determined in extracts which were not enclosed or were partially enclosed in bigeye lens capsule for 24 hr. 3. 3. High molecular weight
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