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  • 1
    Electronic Resource
    Electronic Resource
    Ubiquinone and Ubichromenol (1962)
    [s.l.] : Nature Publishing Group
    Nature 196 (1962), S. 1291-1293 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ubiquinone and Ubichromenol in Torn/a Yeast BIQUINONES (I) and ubichromenols (II) are isomeric. CH3 2-~ CH=CL_CH,1 H Jn HO Ubichromenol10 (n = 9)1 has been found in various animal tissues and ubichromenol? (n=6) occurs in a Torula yeast (commercially dried). The isomerization can be effected ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1961291a0
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  • 2
    Electronic Resource
    Electronic Resource
    Dolichol : a Naturally Occurring Isoprenoid Alcohol (1960)
    [s.l.] : Nature Publishing Group
    Nature 186 (1960), S. 470-472 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The characterization of ubichromenol from 46-5 kgm. of human kidney has been described2.3. Two fractions weighing 6-41 gm. were eluted between ubiquinone and ubichromenol on chromatography. The infra-red spectrum of the bulked material strongly resembled that of an isoprenoid alcohol4. Dolichol was ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/186470b0
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  • 3
    Electronic Resource
    Electronic Resource
    Ubiquinone (1958)
    [s.l.] : Nature Publishing Group
    Nature 182 (1958), S. 1764-1767 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] UBIQUINONE is a new substance of considerable \J biological interest which possesses the structure : It would perhaps be more correct to say that this is the formula for the first of the ubiquinones, as there is already evidence of a plurality of compounds differing only in respect of the long ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1821764a0
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  • 4
    Electronic Resource
    Electronic Resource
    Aspects of Vitamin a Deficiency in Rats (1953)
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 716-719 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE accepted signs of vitamin A deficiency are (1) defective low-intensity vision, (2) retarded growth leading to loss of weight, (3) hyperkeratosis (keratinizing metaplasia), and (4) xerophthalmia. The usual biological assay is carried out on rats depleted to the point of rapid loss of weight. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/172716a0
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  • 5
    Electronic Resource
    Electronic Resource
    Pure All-trans Vitamin A Acetate and the Assessment of Vitamin A Potency by Spectrophotometry (1951)
    [s.l.] : Nature Publishing Group
    Nature 168 (1951), S. 598-598 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The absorption spectra of many organic solutes vary to some extent in different solvents, even when there is no evidence of equilibria between isomeric forms. In the case of vitamin A such variations have been known to occur since 19352; but they are second-order effects which have hitherto been ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/168598a0
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  • 6
    Electronic Resource
    Electronic Resource
    Retinal Receptors (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 673-674 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DARTNALL'S report1 of the discovery of two new retinal pigments does not seem to us to rest on convincing evidence. Hartridge2, writing from the same Institute, carries so far what we believe to be fallacious reasoning that the matter requires to be discussed. The statement is made that "the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167673a0
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  • 7
    Electronic Resource
    Electronic Resource
    Indole-3-aldehyde from Tissues (1958)
    [s.l.] : Nature Publishing Group
    Nature 182 (1958), S. 939-939 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Substance AAE-I-AI showed (in methanol) absorption peaks at 242, 260 and 295 m and in concentrated sulphuric acid peaks at 240, 265 and 330 m The published absorption curves show well-marked patterns of maxima and minima. The preparation exhibited a positive Millon test, regarded as indicative of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/182939a0
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  • 8
    Electronic Resource
    Electronic Resource
    Spectroscopy as a Biochemical Tool (1962)
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 314-318 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DEVELOPMENTS in absorption spectroscopy I J have centred on (a) techniques, (b) the presentation of data and (c) making accessible a body of sifted and classified information. High-tension sparks between metallic electrodes were rich in ultra-violet light and the spectra obtained with quartz prism ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/193314a0
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  • 9
    Electronic Resource
    Electronic Resource
    Safety in Laboratories (1962)
    [s.l.] : Nature Publishing Group
    Nature 194 (1962), S. 809-811 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] AS universities and similar institutions grow larger, and the work done in laboratories and workshops becomes more complicated, there is greater need to maintain and strengthen safety precautions. Some years ago the University of Liverpool appointed a retired fire officer to inspect and maintain ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/194809a0
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  • 10
    Electronic Resource
    Electronic Resource
    Cholesterol and Vitamin D (1928)
    [s.l.] : Nature Publishing Group
    Nature 121 (1928), S. 452-453 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] BILLS, Honeywell and MacNair have recently demonstrated (Jour. Biol. Ghem., 76, 251 ; 1928) that both ergosterol and ordinary purified cholesterol, in addition to the previously observed well-defined absorption bands at 293.5, 281.5, and 270 μμ (Morton, Heilbron and Kamm, Biochem. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/121452b0
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