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[½»Á÷] Nature Contents 21 September 2006 (Vol. 443 pp245-370 )

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A juvenile early hominin skeleton from Dikika, Ethiopia / Geological
and palaeontological context of a Pliocene juvenile hominin at Dikika,
Ethiopia
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----------------------
NEWS AND VIEWS
----------------------
Climate change: Greenland's ice on the scales Satellite measurements
of changes in Earth's gravity field reveal ice loss from Greenland's
ice sheet. Over the past four years, this melt has contributed to
global sea-level rise at an accelerating rate.
Tavi Murray
10.1038/443277a
http://www.nature.com/nature/journal/v443/n7109/full/443277a.html

Palaeoanthropology: A precious little bundle The three-million-year
old skeleton of a three-year-old child provides an outstanding
resource to understand the development of a human ancestor that seems
to have both walked upright and climbed through trees.
Bernard Wood
10.1038/443278a
http://www.nature.com/nature/journal/v443/n7109/full/443278a.html

50 & 100 years ago
10.1038/443279a
http://www.nature.com/nature/journal/v443/n7109/full/443279a.html

Mathematical physics: Search research
How does one best search for non-replenishable targets at unknown
positions? An optimized search strategy could be applied to situations
as diverse as animal foraging and time-sensitive rescue missions.
Michael F. Shlesinger
10.1038/443281a
http://www.nature.com/nature/journal/v443/n7109/full/443281a.html

HIV: Tired T cells turn around
HIV-1 prompts a massive cellular immune response, but eventually it
tires the immune cells. Blocking the activation of a cell receptor
called PD-1 might restore these exhausted cells.
Sarah Rowland-Jones and Tao Dong
10.1038/443282a
http://www.nature.com/nature/journal/v443/n7109/full/443282a.html

Astronomy: Champagne supernova
Thermonuclear supernovae were thought to occur only when white-dwarf
stars of a certain mass explode. The discovery of a supernova that is
way over the mass limit might require a reworking of the model.
David Branch
10.1038/443283a
http://www.nature.com/nature/journal/v443/n7109/full/443283a.html

Stem cells: A new route to rejuvenation
Embryonic stem cells are prized for their ability to mature into all
the specialized adult cell types. It may now be possible to
reprogramme adult body cells to have the characteristics of stem
cells.
M. Azim Surani and Anne McLaren
10.1038/443284a
http://www.nature.com/nature/journal/v443/n7109/full/443284a.html

Chemical biology: A sweet exchange
Many drugs isolated from microorganisms have complex molecular
structures, making it difficult for chemists to modify them. But it
seems that enzymes can provide a short cut to drug variants.
Christopher T. Walsh
10.1038/443285a
http://www.nature.com/nature/journal/v443/n7109/full/443285a.html

----------------------
BRIEF COMMUNICATIONS
----------------------
Induction of an illusory shadow person
Shahar Arzy et al.
10.1038/443287a
Abstract: http://www.nature.com/nature/journal/v443/n7109/abs/443287a.
html
Article: http://www.nature.com/nature/journal/v443/n7109/full/443287a.
html

BRIEF COMMUNICATIONS ARISING
Gene therapy: Is IL2RG oncogenic in T-cell development?
Karin Pike-Overzet et al.
10.1038/nature05218
Abstract:
http://www.nature.com/nature/jou ... bs/nature05218.html
Article:
http://www.nature.com/nature/jou ... ll/nature05218.html

Gene therapy: X-SCID transgene leukaemogenicity Adrian J. Thrasher et
al.
10.1038/nature05219
Abstract:
http://www.nature.com/nature/jou ... bs/nature05219.html
Article:
http://www.nature.com/nature/jou ... ll/nature05219.html

Gene therapy: Is IL2RG oncogenic in T-cell development?: X-SCID
transgene leukaemogenicity (reply) Niels-Bjarne Woods et al.
10.1038/nature05220
Abstract:
http://www.nature.com/nature/jou ... bs/nature05220.html
Article:
http://www.nature.com/nature/jou ... ll/nature05220.html

----------------------
REVIEW
----------------------
Central nervous system control of food intake and body weight G. J.
Morton et al.
10.1038/nature05026
Abstract:
http://www.nature.com/nature/jou ... bs/nature05026.html
Article:
http://www.nature.com/nature/jou ... ll/nature05026.html

----------------------
ARTICLES
----------------------
A juvenile early hominin skeleton from Dikika, Ethiopia Zeresenay
Alemseged et al.
10.1038/nature05047
Abstract:
http://www.nature.com/nature/jou ... bs/nature05047.html
Article:
http://www.nature.com/nature/jou ... ll/nature05047.html

Crystal structure of an H/ACA box ribonucleoprotein particle Ling Li
and Keqiong Ye
10.1038/nature05151
Abstract:
http://www.nature.com/nature/jou ... bs/nature05151.html
Article:
http://www.nature.com/nature/jou ... ll/nature05151.html

----------------------
LETTERS
----------------------
The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass
white dwarf star The high-redshift supernova SNLS-03D3bb has an
exceptionally high luminosity and low kinetic energy, which both imply
a super-Chandrasekhar mass progenitor.
D. Andrew Howell et al.
10.1038/nature05103
Abstract:
http://www.nature.com/nature/jou ... bs/nature05103.html
Article:
http://www.nature.com/nature/jou ... ll/nature05103.html

Spontaneous symmetry breaking in a quenched ferromagnetic spinor
Bose-Einstein condensate This paper reports the observation of quantum
phase transition to a ferromagnetic state in a gaseous spinor
Bose-Einstein condensate. The formation of ferromagnetic domains and
domain walls is observed, and spin vortices (containing non-zero spin
current but no net mass
current) detected in situ.
L. E. Sadler et al.
10.1038/nature05094
Abstract:
http://www.nature.com/nature/jou ... bs/nature05094.html
Article:
http://www.nature.com/nature/jou ... ll/nature05094.html

'Designer atoms' for quantum metrology
In quantum metrology, entangled states can be used to improve the
signal-to-noise ratio. The use of a specially designed, entangled
state of two Ca+ ions achieves an ultra-precise spectroscopic
measurement of the electric quadrupole moment.
C. F. Roos et al.
10.1038/nature05101
Abstract:
http://www.nature.com/nature/jou ... bs/nature05101.html
Article:
http://www.nature.com/nature/jou ... ll/nature05101.html

A guest-free germanium clathrate
The structural, chemical and physical characterization of a
low-density, empty germanium framework structure, or clathrate,
synthesized using a new route exploiting an ionic liquid as a reaction
medium is described.
Arnold M. Guloy et al.
10.1038/nature05145
Abstract:
http://www.nature.com/nature/jou ... bs/nature05145.html
Article:
http://www.nature.com/nature/jou ... ll/nature05145.html

The cause of the fragile relationship between the Pacific El Nino and
the Atlantic Nino Ping Chang et al.
10.1038/nature05053
Abstract:
http://www.nature.com/nature/jou ... bs/nature05053.html
Article:
http://www.nature.com/nature/jou ... ll/nature05053.html

Acceleration of Greenland ice mass loss in spring 2004 Isabella
Velicogna and John Wahr
10.1038/nature05168
Abstract:
http://www.nature.com/nature/jou ... bs/nature05168.html
Article:
http://www.nature.com/nature/jou ... ll/nature05168.html

Geological and palaeontological context of a Pliocene juvenile hominin
at Dikika, Ethiopia Jonathan G. Wynn et al.
10.1038/nature05048
Abstract:
http://www.nature.com/nature/jou ... bs/nature05048.html
Article:
http://www.nature.com/nature/jou ... ll/nature05048.html

A common progenitor for haematopoietic and endothelial lineages in the
zebrafish gastrula In vivo evidence details the existence of the
haemangioblast: a bipotential precursor of both blood and endothelial
cells that has been hypothesized to exist for almost 100 years, but
for which formal proof has so far been lacking.
Kevin M. Vogeli, Suk-Won Jin, Gail R. Martin and Didier Y. R. Stainier
10.1038/nature05045
Abstract:
http://www.nature.com/nature/jou ... bs/nature05045.html
Article:
http://www.nature.com/nature/jou ... ll/nature05045.html

Topical drug rescue strategy and skin protection based on the role of
Mc1r in UV-induced tanning A small molecule that mimics enhanced
melanocortin 1 receptor signalling in response to ultraviolet light
can stimulate pigmentation and thereby protect mice with light skin
from DNA damage and cancer formation.
John A. D'Orazio et al.
10.1038/nature05098
Abstract:
http://www.nature.com/nature/jou ... bs/nature05098.html
Article:
http://www.nature.com/nature/jou ... ll/nature05098.html

Calcineurin/NFAT signalling regulates pancreatic ¦Â-cell growth and
function Jeremy J. Heit et al.
10.1038/nature05097
Abstract:
http://www.nature.com/nature/jou ... bs/nature05097.html
Article:
http://www.nature.com/nature/jou ... ll/nature05097.html

PD-1 expression on HIV-specific T cells is associated with T-cell
exhaustion and disease progression Cheryl L. Day et al.
10.1038/nature05115
Abstract:
http://www.nature.com/nature/jou ... bs/nature05115.html
Article:
http://www.nature.com/nature/jou ... ll/nature05115.html

Stoichiometry and turnover in single, functioning membrane protein
complexes The dynamic exchange of motor proteins in a functioning
45-nm rotary complex was observed in vivo and GFP-MotB stator proteins
visualized in individual bacterial flagellar motors. Fluorescence
recovery after photobleaching reveals that the ~22 MotB motor proteins
exchange rapidly with a pool of free protein while the motor is
actively rotating.
Mark C. Leake et al.
10.1038/nature05135
Abstract:
http://www.nature.com/nature/jou ... bs/nature05135.html
Article:
http://www.nature.com/nature/jou ... ll/nature05135.html

Prevalence of off-target effects in Drosophila RNA interference
screens The use of long double-stranded RNAs (dsRNAs) in Drosophila,
where Dicer-mediated processing produces small RNAs inside cells, has
been thought to reduce the probability of 'off-target effects' (OTEs).
However, this study shows that OTEs mediated by short homology
stretches within long dsRNAs are prevalent in Drosophila.
Yong Ma, Adrian Creanga, Lawrence Lum and Philip A. Beachy
10.1038/nature05179
Abstract:
http://www.nature.com/nature/jou ... bs/nature05179.html
Article:
http://www.nature.com/nature/jou ... ll/nature05179.html
2Â¥2006-09-22 12:11:41
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