This Week in Science

Editor summaries of this week's papers.
Science 24 September 1999: 2029.
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 Editorial:
Ethical Dilemmas and Stem Cell Research

Harold T. Shapiro
Science 24 September 1999: 2065.
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NetWatch

Best of the Web in science.
Science 24 September 1999: 2027.
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 Quarterly Author Index

Science 24 September 1999: 1-14.

 NEW PRODUCTS

Science 24 September 1999: 2149-2150.

 AAAS News & Notes

Science 24 September 1999: 2151.

News of the Week

HUMAN GENOME:
Team Wrapping Up Sequence of First Human Chromosome

Dennis Normile and Elizabeth Pennisi
Science 24 September 1999: 2038-2039.
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SCIENCE PUBLISHING:
Cell Editor Steps Down

Marcia Barinaga
Science 24 September 1999: 2039.
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SCIENCE PUBLISHING:
NEJM Publisher Resigns

Constance Holden
Science 24 September 1999: 2039.
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AIDS THERAPY:
Ambitious Clinical Trial Stirs Debate

Jon Cohen
Science 24 September 1999: 2039-2042.
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IMMUNOLOGY:
On the Way to a Better Immunosuppressant?

Michael Hagmann
Science 24 September 1999: 2042.
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MUSEUM MANAGEMENT:
Smithsonian Taps Banker as New Leader

David Malakoff
Science 24 September 1999: 2042.
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ASTRONOMY:
Italian Observatories to Form National Institute

Alexander Hellemans
Science 24 September 1999: 2044.
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EARTHQUAKES:
Prediction Claims Stir Greek Controversy

Richard A. Kerr
Science 24 September 1999: 2044-2045.
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NASA:
Space Science Feels Budget Ax in Senate

Andrew Lawler
Science 24 September 1999: 2045-2047.
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BIOMEDICAL RESEARCH:
AIDS Researchers Blast NIH Peer Review Plan

Eliot Marshall
Science 24 September 1999: 2047.
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UNIVERSITY OF ILLINOIS:
Chancellor Quits After Research Shutdown

Constance Holden
Science 24 September 1999: 2047.
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ScienceScope

Science 24 September 1999: 2041.
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Random Samples

Science 24 September 1999: 2057.
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News Focus

STRUCTURAL BIOLOGY:
The Race to the Ribosome Structure

Elizabeth Pennisi
Science 24 September 1999: 2048-2051.
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STRUCTURAL BIOLOGY:
Challenge From Electron Microscopy

Elizabeth Pennisi
Science 24 September 1999: 2050.
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PALEONTOLOGY:
T. rex Was Fierce, Yes, But Feathered, Too

Tim Appenzeller
Science 24 September 1999: 2052-2053.
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AMERICAN CHEMICAL SOCIETY:
Raising a Glass to Health and Nanotubes

Robert F. Service
Science 24 September 1999: 2053-2055.
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Letters

This Week's Letters

Science 24 September 1999: 2067.
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 Brazilian Nobel Hopes

Peter Rudolf Seidl
Science 24 September 1999: 2067.
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 Smallpox Vaccine

Jonathan Katz
Science 24 September 1999: 2067.
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 Testing the Genetics of Behavior in Mice

Marina R. Picciotto, David W. Self;, Larissa A. Pohorecky;, Gerard R. Dawson, Jonathan Flint, Lawrence S. Wilkinson;, RenÚ Hen;, Michael G. Tordoff, Alexander A. Bachmanov, Mark I. Friedman, Gary K. Beauchamp;, Douglas Wahlsten, John Crabbe, and Bruce Dudek
Science 24 September 1999: 2067.
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 CORRECTIONS AND CLARIFICATIONS

Science 24 September 1999: 2067.
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Books et al.

HIGHER EDUCATION:
Balancing Research and Teaching

Leo M. Chalupa
Science 24 September 1999: 2073-2075.
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CHEMISTRY:
Reacting to History

Jay Labinger
Science 24 September 1999: 2075.
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Policy Forum

HUMAN GENETICS:
Ethical Considerations in Leaping from Bench to Bedside

Jeremy Sugarman
Science 24 September 1999: 2071-2072.
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Perspectives

NEUROBIOLOGY:
Enhanced: Narcolepsy Genes Wake Up the Sleep Field

Joseph S. Takahashi
Science 24 September 1999: 2076-2077.
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STRUCTURE:
Function Is Structure

Anders Liljas
Science 24 September 1999: 2077-2078.
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DEVICE PHYSICS:
Pushing the Limits

Paul A. Packan
Science 24 September 1999: 2079-2081.
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POLYMER CHEMISTRY:
Nanoscale Polymerization Reactors for Polymer Fibers

Petri Lehmus and Bernhard Rieger
Science 24 September 1999: 2081-2082.
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CELL BIOLOGY:
All Creatures Great and Small

Sally J. Leevers
Science 24 September 1999: 2082-2083.
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Review

Prospects for in Utero Human Gene Therapy

Esmail D. Zanjani and W. French Anderson
Science 24 September 1999: 2084-2088.
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Research Article

X-ray Crystal Structures of 70S Ribosome Functional Complexes

Jamie H. Cate, Marat M. Yusupov, Gulnara Zh. Yusupova, Thomas N. Earnest, and Harry F. Noller
Science 24 September 1999: 2095-2104.
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Reports

Collisionally Processed Rocks on Mars

Friedrich Hörz, Mark J. Cintala, W. C. Rochelle, and B. Kirk
Science 24 September 1999: 2105-2107.
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Defect-Mediated Condensation of a Charge Density Wave

Hanno H. Weitering, Joseph M. Carpinelli, Anatoli V. Melechko, Jiandi Zhang, Miroslaw Bartkowiak, and E. Ward Plummer
Science 24 September 1999: 2107-2110.
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Evidence for Quantum Critical Behavior in the Optimally Doped Cuprate Bi₂Sr₂CaCu₂O₈₊

T. Valla, A. V. Fedorov, P. D. Johnson, B. O. Wells, S. L. Hulbert, Q. Li, G. D. Gu, and N. Koshizuka
Science 24 September 1999: 2110-2113.
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Extrusion Polymerization: Catalyzed Synthesis of Crystalline Linear Polyethylene Nanofibers Within a Mesoporous Silica

Keisuke Kageyama, Jun-ichi Tamazawa, and Takuzo Aida
Science 24 September 1999: 2113-2115.
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Primordial Noble Gases from Earth's Mantle: Identification of a Primitive Volatile Component

M. W. Caffee, G. B. Hudson, C. Velsko, G. R. Huss, E. C. Alexander, Jr., and A. R. Chivas
Science 24 September 1999: 2115-2118.
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Magma Intrusion Beneath Long Valley Caldera Confirmed by Temporal Changes in Gravity

M. Battaglia, C. Roberts, and P. Segall
Science 24 September 1999: 2119-2122.
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Impaired Fas Response and Autoimmunity in Pten^+/ Mice

Antonio Di Cristofano, Paraskevi Kotsi, Yu Feng Peng, Carlos Cordon-Cardo, Keith B. Elkon, and Pier Paolo Pandolfi
Science 24 September 1999: 2122-2125.
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Drosophila S6 Kinase: A Regulator of Cell Size

Jacques Montagne, Mary J. Stewart, Hugo Stocker, Ernst Hafen, Sara C. Kozma, and George Thomas
Science 24 September 1999: 2126-2129.
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Affinity-Driven Peptide Selection of an NFAT Inhibitor More Selective Than Cyclosporin A

José Aramburu, Michael B. Yaffe, Cristina López-Rodríguez, Lewis C. Cantley, Patrick G. Hogan, and Anjana Rao
Science 24 September 1999: 2129-2133.
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Identification of an RNA-Protein Bridge Spanning the Ribosomal Subunit Interface

Gloria M. Culver, Jamie H. Cate, G. Zh. Yusupova, Marat M. Yusupov, and Harry F. Noller
Science 24 September 1999: 2133-2135.
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Muscle and Movement Representations in the Primary Motor Cortex

Shinji Kakei, Donna S. Hoffman, and Peter L. Strick
Science 24 September 1999: 2136-2139.
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Technical Comments

 Divergence Times of Eutherian Mammals

J. David Archibald;, S. Blair Hedges, Sudhir Kumar;, Thomas H. Rich, Patricia Vickers-Rich, Timothy F. Flannery;, Mike Foote, John P. Hunter, Christine M. Janis, and J. John Sepkoski, Jr.
Science 24 September 1999: 2031.
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