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  • 1
    Electronic Resource
    Electronic Resource
    Connective-Tissue Pigment of the Centipede, Lithobius forficatus (L.) (1958)
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 194-195 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The pigment has been extracted by mild treatment and further purified by precipitation and chromato-graphic procedures. The absorption spectrum of the oxidized form, in neutral aqueous medium, shows a peak around 580 mjjt, and a trough around 495 mjju. With decrease in wave-length beyond this point ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/181194b0
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  • 2
    Electronic Resource
    Electronic Resource
    Nitrogen Output and Ecdysis in Crustacea (1956)
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 495-496 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As in Carcinides, ammonia output is relatively low 5 6 days before ecdysis and shows a similar incipient rise up to the time of moulting (Fig. 1). After ecdysis it rises sharply and considerably and then declines more gradually to approach the initial minimal value in 10 15 days, that is, about 5 6 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/178495a0
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  • 3
    Electronic Resource
    Electronic Resource
    Arrow Symbol in Biology (1960)
    [s.l.] : Nature Publishing Group
    Nature 186 (1960), S. 103-104 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The representation A -〉 B has been used with the following meanings, among others: (1) molecule A is converted to molecule B; (2) entity A produces, gives or donates entity B; (3) entity A is converted (in various senses) into entity B; (4) A induces the formation of B; (5) A stimulates or acts ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/186103a0
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  • 4
    Electronic Resource
    Electronic Resource
    Physiology of the Heart of Asellus aquaticus L. (1954)
    [s.l.] : Nature Publishing Group
    Nature 173 (1954), S. 272-272 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Mechanical and electrical stimulation revealed an accelerator nerve following the anterior aorta, undoubtedly the anterior nerve of Alexandrowicz1. Transection of the ventral nerve cord just behind the head regularly slowed the heart in situ. Transection of the anterior aorta in this region had ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/173272a0
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  • 5
    Electronic Resource
    Electronic Resource
    The Quadratic Relation in Differential Growth (1957)
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 1293-1293 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It seems worth considering possible implications of this relation, should it prove to have more than empirical significance. The second differential of y with respect to a; is a constant : dzyldx* = 2c, which implies a constant differential acceleration of growth between the two measurements. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1801293a0
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  • 6
    Electronic Resource
    Electronic Resource
    The Neurogenic Heart and Ether Anæsthesia (1950)
    [s.l.] : Nature Publishing Group
    Nature 166 (1950), S. 9-11 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT has been shown1 that the distinction between hearts which are inhibited by acetylcholine, in low concentration (10~8), and those which are accelerated, usually by substantially higher concentrations (10~6), corresponds essentially to the classical distinction between 'myogenic' and 'neurogenic' ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/166009a0
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  • 7
    Electronic Resource
    Electronic Resource
    Adaptive Value of Regenerative Ability (1961)
    [s.l.] : Nature Publishing Group
    Nature 191 (1961), S. 720-721 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Eighty-two individuals, 42cJ and 40$, were collected at Seaton, south-east Cornwall. They were removed from the shell after fixation in alcohol, and examined under a low-power binocular microscope for fresh and long-standing (natural) losses of eyes, first and second antennae, pereiopods and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/191720a0
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  • 8
    Electronic Resource
    Electronic Resource
    Senescence and Senility (1962)
    [s.l.] : Nature Publishing Group
    Nature 194 (1962), S. 507-508 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Nicholls claims to show that Minot's relation is after all more plausible than mine, and while I do not feel that he has established either this or his other main claims, I think that the approach is very valuable. For this reason and also in the hope of clarifying a number of aspects of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/194507a0
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  • 9
    Electronic Resource
    Electronic Resource
    Evolution of Regeneration, and its Possible Bearing on Philosophy (1961)
    [s.l.] : Nature Publishing Group
    Nature 192 (1961), S. 1255-1256 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DR. SPILSBTJBY renders a general service in bridging the gulf between philosophy and biology, and a special service to biology in focusing attention on regeneration as a critical test case of the ability of the Darwinian theory to explain the mode of evolution. His suggestion that the genetic ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1921255a0
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  • 10
    Electronic Resource
    Electronic Resource
    The Problem of ‘Methæmocyanin’ (1961)
    [s.l.] : Nature Publishing Group
    Nature 189 (1961), S. 308-309 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] There still remains some obscurity, however, concerning 'methaemocyanin', which is prepared, like methaemoglobin, by the action of strong oxidizing agents on the pigment5. It is not clear why methaem-ocyanin should still be able to take up oxygen reversiMy, with a colour change essentially similar ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/189308a0
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