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Digitale Medien

Antineoplastic Activity of Clam Liver Extract (1968)

LI, C. P. ; PRESCOTT, B. ; MARTINO, E. C. ; [weitere]

[s.l.] : Nature Publishing Group

Nature 219 (1968), S. 1163-1164

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] In a previous communication4, the clam extracts showing antitumour activity were prepared from whole shucked clams. These extracts contained large quantities of extraneous material which interfered with identification and purification of the active factor. More recently, Liu and Cipolla6 found by ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/2191163a0

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2

Digitale Medien

Effect of conductivity interfaces in electrocardiography (1968)

Pilkington, T. C. ; Barr, R. C. ; Rogers, C. L.

Springer

Bulletin of mathematical biology 30 (1968), S. 637-643

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ISSN: 1522-9602

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Mathematik

Notizen: Abstract This paper develops numerical techniques for two problems of interest in electrocardiography: (1) the determination of infinite-media surface potential gradients from boundedmedia torso potentials, and (2) the effects of lung-torso, blood mass-torso, and torso-air conductivity interfaces on torso surface potentials. This paper is an extension of a previous paper on the effects of conductivity interfaces which also utilized an integral equation formulation of Laplace's equation.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02476680

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3

Digitale Medien

Synchronous activation of both parental alleles at the 6-PGD locus of Japanese quail embryos (1968)

Ohno, S. ; Stenius, C. ; Christian, L. C. ; [weitere]

Springer

Biochemical genetics 2 (1968), S. 197-204

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ISSN: 1573-4927

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: Abstract The gene locus for the enzyme 6-phosphogluconate dehydrogenase belongs to that part of the genome which is activated at the beginning of embryonic development. The present experiment, utilizing three alleles at this autosomally inherited locus of the Japanese quail, was designed to show whether exhaustion of maternally stored 6-PGD is followed by maternally hemizygous de novo synthesis of the same enzyme. 6-PGD phenotypes of early embryos resulting from the mating between a male homozygous for one allele and a female heterozygous for two other alleles were examined by starch gel electrophoresis. The result showed that the maternally stored 6-PGD is exhausted before the twenty-fourth hour of incubation. This is followed by synchronous activation of both parental alleles. Previous studies on the development of various interspecific crosses have revealed that, at all loci studied, the activation of the maternally derived allele preceded that of the paternally derived allele. The present experiment reveals that preferential activation of maternally derived alleles need not be a rule of development.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01474758

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4

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Synchronous activation of both parental alleles at the 6-PGD locus of Japanese quail embryos (1968)

Ohno, S. ; Stenius, C. ; Christian, L. C. ; [weitere]

Springer

In: Biochemical Genetics. 1968; 2(3): 197-204. Published 1968 Nov 01. doi: 10.1007/bf01474758.

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Publikationsdatum: 1968-11-01

Print ISSN: 0006-2928

Digitale ISSN: 1573-4927

Thema: Biologie , Chemie und Pharmazie

Publiziert von Springer

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5

Digitale Medien

Thyrocalcitonin (1968)

Tenenhouse, A ; Rasmussen, H ; Hawker, C D ; [weitere]

Palo Alto, Calif. : Annual Reviews

Annual Review of Pharmacology 8 (1968), S. 319-336

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ISSN: 0362-1642

Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff

Thema: Medizin , Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1146/annurev.pa.08.040168.001535

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6

Digitale Medien

Mössbauer Effect in the Ferredoxin of Euglena (1968)

JOHNSON, C. E. ; ELSTNER, E. ; GIBSON, J. F. ; [weitere]

[s.l.] : Nature Publishing Group

Nature 220 (1968), S. 1291-1293

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] Mössbauer spectroscopy of this iron–sulphur protein can give information about the state of the iron ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/2201291a0

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7

Digitale Medien

Effect of Abscisic Acid on Budbreak and Transpiration in Woody Species (1968)

LITTLE, C. H. A. ; EIDT, D. C.

[s.l.] : Nature Publishing Group

Nature 220 (1968), S. 498-499

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] One year old, 20 cm cuttings were taken on March 7 from four species of tree: a diffuse-porous hardwood- red maple (Acer rubrum L.), a ring-porous hardwood- white ash (Fraxinus americana L.), and two softwoods- balsam fir (Abies balsamea L.) and white spruce (Picea glauca (Moench) Voss). The bases ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/220498a0

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8

Digitale Medien

Localized Interstellar Molecular Hydrogen (1968)

REDDISH, V. C. ; WICKRAMASINGHE, N. C.

[s.l.] : Nature Publishing Group

Nature 220 (1968), S. 463-464

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] Even if one accepts the ideal physical adsorption model of Stecher and Williams, their results are quite sensitive to particular values chosen for various unknown parameters. All their temperatures designated Tmax in Table 1, in particular Tmax(Hmit), involve the proportionality factor ln where ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/220463a0

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9

Digitale Medien

Crystallization of Transfer RNA (1968)

CLARK, B. F. C. ; DOCTOR, B. P. ; HOLMES, K. C. ; [weitere]

[s.l.] : Nature Publishing Group

Nature 219 (1968), S. 1222-1224

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] A bacterial transfer RNA (tRNAFMet) has been obtained in micro-crystalline form. Its probable unit cell dimensions have been deduced from X-ray powder ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/2191222a0

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10

Digitale Medien

Simultaneous Recording of Membrane Potential, Calcium Transient and Tension in Single Muscle Fibres (1968)

ASHLEY, C. C. ; RIDGWAY, E. B.

[s.l.] : Nature Publishing Group

Nature 219 (1968), S. 1168-1169

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] Single muscle fibres from the barnacle Balanus nubilus3 were injected with the calcium-sensitive bioluminescent protein, aequorin, as described before2, except that the injection solution was potassium phosphate buffer, pH. 6.1. The purification and properties of aequorin have already been ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/2191168a0

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