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1

Digitale Medien

A new missing link (1997)

Witmer, Lawrence M.

[s.l.] : Nature Publishing Group

Nature 387 (1997), S. 349-350

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] Among evolutionary debates, perhaps only the origin of humans has attracted as much attention as avian origins. Less than two years after Darwin's Origin of Species hit the shelves, a spectacular 'missing link' between birds and reptiles was unearthed in Germany: the famous 'feathered reptile' ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/387349a0

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2

Digitale Medien

Forcible foam (1997)

[s.l.] : Nature Publishing Group

Nature 387 (1997), S. 355-355

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] Surface-active compounds, such as detergents and membrane lipids, have molecules in which a hydrophobic grouping is coupled to a hydrophilic one. They can stabilize a fluid interface by crowding along it as a monolayer, with the hydrophilic groups in the aqueous phase and the hydrophobic ones ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/387355a0

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3

Digitale Medien

Trade-off-invariant rules for evolutionary stable life histories (1997)

Charnov, Eric L.

[s.l.] : Nature Publishing Group

Nature 387 (1997), S. 393-394

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] Consider an economic problem in the allocation between two alternatives Xl and X2 in which allowed values must fall on (or within) a constraint or trade-off curve, as shown in Fig. 1. Further suppose that the utility function (fitness) maximized is the simple product Xl-X2y which is equivalent to ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/387393a0

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4

Digitale Medien

Molecular basis of symbiosis between Rhizobium and legumes (1997)

Freiberg, Christoph ; Fellay, Rémy ; Bairoch, Amos ; [weitere]

[s.l.] : Nature Publishing Group

Nature 387 (1997), S. 394-401

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] Many dissimilar organisms live in close association with one another. Nitrogen-fixing symbioses, in which auxotrophs exchange carbohydrates for organic nitrogen with diazotrophs, dominate numerous ecological niches. Members of the plant family Legumi-nosae, in association with the soil bacteria ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/387394a0

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5

Digitale Medien

Pax6 is required for differentiation of glucagon-producing α-cells in mouse pancreas (1997)

St-Onge, Luc ; Sosa-Pineda, Beatriz ; Chowdhury, Kamal ; [weitere]

[s.l.] : Nature Publishing Group

Nature 387 (1997), S. 406-409

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] Pax6, a member of the Pax gene family, is expressed in the developing eye, nose, pancreas and central nervous system4. Studies on the spontaneous mouse mutant Small eye, in which a point mutation in the Pax6 locus results in a truncated protein, have shown that Pax6 is essential for the formation ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/387406a0

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6

Digitale Medien

Repression of the CDK activator Cdc25A and cell-cycle arrest by cytokine TGF-β in cells lacking the CDK inhibitor p15 (1997)

lavarone, Antonio ; Massagué, Joan

[s.l.] : Nature Publishing Group

Nature 387 (1997), S. 417-422

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] The protein p 15 is an important mediator of the antiproliferative effects of TGF-p3'4. Its increased expression in response to TGF-p is sufficient to cause cell-cycle arrest in certain epithelial cells5. However, pi5INK4B/MTS2 is mutated, deleted or transcriptionally silenced in various human ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/387417a0

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7

Digitale Medien

Myc and Ras collaborate in inducing accumulation of active cyclin E/Cdk2 and E2F (1997)

Leone, Gustavo ; DeGregori, James ; Sears, Rosalie ; [weitere]

[s.l.] : Nature Publishing Group

Nature 387 (1997), S. 422-426

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] To explore possible connections in the regulatory pathways involving Ras, Myc and Gl CDKs, we have generated a recombinant adenovirus that expresses a Ras dominant-negative mutant protein (RasN17). As shown by the experiment in Fig. la, when quiescent REF52 cells were stimulated by serum addition, ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/387422a0

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8

Digitale Medien

Green pastures for plant scientists (1997)

Norton, Brendan

[s.l.] : Nature Publishing Group

Nature 387 (1997), S. 431-432

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] According to a survey of students done some years ago by DowElanco, an Indianapolis-based joint venture between Dow Chemical and Eli Lilly and Co., many students felt that scientists taking jobs in industry were not of the highest calibre and were 'money grabbers'. Their teachers, however, thought ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/387431a0

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9

Digitale Medien

Now for the hard part (1997)

[s.l.] : Nature Publishing Group

Nature 387 (1997), S. 215-215

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] Forget 100 days. Britain's new Labour government has already hit the ground running, as it had pledged. There have been some unexpected - and significant - announcements, such as the decision to give the Bank of England full independence to set interest rates. And there have also been welcome moves ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/387215b0

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10

Digitale Medien

Hughes confirms its faith in excellence (1997)

[s.l.] : Nature Publishing Group

Nature 387 (1997), S. 223-223

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] [WASHINGTON] For a fortunate group of America's best life scientists, things will never be the same again after next Monday, 19 May. On that day, this elite will join the staff of the Howard Hughes Medical Institute (HHMI) as part of the philanthropic organization's largest expansion - their number ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/387223a0

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