Articles

 THIS WEEK IN SCIENCE

Science 17 September 1993: 1501.
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 A Multipurpose National Laboratory

Philip H. Abelson
Science 17 September 1993: 1503.
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 B Factory Proposals

Burton Richter
Science 17 September 1993: 1505.
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 Biology at Caltech

Robert L. Sinsheimer and Norman H. Horowitz
Science 17 September 1993: 1505-1506.
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 Response

Robert Olby
Science 17 September 1993: 1506.
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 Genetic variation in Africa

AG Thorne, MH Wolpoff, and RB Eckhardt
Science 17 September 1993: 1507-1508.
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 Response

L. L. Cavalli-Sforza, Paolo Menozzi, and Alberto Piazza
Science 17 September 1993: 1508.
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Corrections and Clarifications

Science 17 September 1993: 1508.
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 Science and the toxic tort

KR Foster, DE Bernstein, and PW Huber
Science 17 September 1993: 1509.
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 SCIENCE SCOPE

Science 17 September 1993: 1511.
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 Senate Turns Up the Heat on NSF

Eliot Marshall
Science 17 September 1993: 1512-1513.
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 White House Plans New Science Council

Eliot Marshall
Science 17 September 1993: 1513.
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 EPA analysis of radon in water is hard to swallow

R Stone
Science 17 September 1993: 1514-1516.
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 Radon Risks Up in the Air

Richard Stone
Science 17 September 1993: 1515.
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 Conflict of interest. White House seeks uniform policy

C Anderson
Science 17 September 1993: 1516.
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 A New Study Finds There's Life Left in the Green Revolution

Bob Holmes
Science 17 September 1993: 1517.
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 How Lethal Was the K-T Impact?

Virginia Morell
Science 17 September 1993: 1518-1519.
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 A Bigger Death Knell for the Dinosaurs?

Richard A. Kerr
Science 17 September 1993: 1518-1519.
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 New lead to an Alzheimer's mouse?

J Marx
Science 17 September 1993: 1520.
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 Closing In on X-Ray Background Origins

Science 17 September 1993: 1520-1521.
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 Holding the Lines in High- Temperature Superconductors

Gary Taubes
Science 17 September 1993: 1521-1522.
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 PARC Builds a World Saturated With Computation

M. Mitchell Waldrop
Science 17 September 1993: 1523-1524.
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 Moondust in Your Eyes

Science 17 September 1993: 1525.
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 Toxicologists Watch As the Worm Turns

Science 17 September 1993: 1525.
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 Spinal Trial Gets Stopped

Science 17 September 1993: 1525.
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 French Get a Head in The Fossil Hunt

Science 17 September 1993: 1525.
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 Gene expression and the cell cycle: a family affair

BJ Andrews and SW Mason
Science 17 September 1993: 1543-1544.
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Chemistry of the Fullerenes: The Manifestation of Strain in a Class of Continuous Aromatic Molecules

R. C. Haddon
Science 17 September 1993: 1545-1550.
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A role for the transcription factors Mbp1 and Swi4 in progression from G1 to S phase

C Koch, T Moll, M Neuberg, H Ahorn, and K Nasmyth
Science 17 September 1993: 1551-1557.
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Mechanism and Dynamics of Ion Transfer Across a Liquid-Liquid Interface

llan Benjamin
Science 17 September 1993: 1558-1560.
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Cross-Shelf Sediment Transport by an Anticyclonic Eddy Off Northern California

Libe Washburn, Mark S. Swenson, John L. Largier, P. Michael Kosro, and Steven R. Ramp
Science 17 September 1993: 1560-1564.
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Chicxulub Multiring Impact Basin: Size and Other Characteristics Derived from Gravity Analysis

Virgil L. Sharpton, Kevin Burke, Antonio Camargo-Zanoguera, Stuart A. Hall, D. Scott Lee, Luis E. Marín, Gerardo Suáarez-Reynoso, Juan Manuel Quezada-Muñeton, Paul D. Spudis, and Jaime Urrutia-Fucugauchi
Science 17 September 1993: 1564-1567.
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Chemical Modification of the Photoluminescence Quenching of Porous Silicon

Jeffrey M. Lauerhaas and Michael J. Sailor
Science 17 September 1993: 1567-1568.
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A Potentially Realizable Quantum Computer

Seth Lloyd
Science 17 September 1993: 1569-1571.
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A UV-sensitive mutant of Arabidopsis defective in the repair of pyrimidine-pyrimidinone(6-4) dimers

AB Britt, JJ Chen, D Wykoff, and D Mitchell
Science 17 September 1993: 1571-1574.
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Major groove accessibility of RNA

KM Weeks and DM Crothers
Science 17 September 1993: 1574-1577.
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Probing the mechanism of staphylococcal nuclease with unnatural amino acids: kinetic and structural studies

JK Judice, TR Gamble, EC Murphy, AM de Vos, and PG Schultz
Science 17 September 1993: 1578-1581.
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Thymic selection of cytotoxic T cells independent of CD8 alpha-Lck association

IT Chan, A Limmer, MC Louie, ED Bullock, WP Fung-Leung, TW Mak, and DY Loh
Science 17 September 1993: 1581-1584.
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Disappearance of the lymphoid system in Bcl-2 homozygous mutant chimeric mice

K Nakayama, K Nakayama, I Negishi, K Kuida, Y Shinkai, MC Louie, LE Fields, PJ Lucas, V Stewart, FW Alt, and al. et
Science 17 September 1993: 1584-1588.
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Immunoglobulin VH3 gene products: natural ligands for HIV gp120

L Berberian, L Goodglick, TJ Kipps, and J Braun
Science 17 September 1993: 1588-1591.
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IRS-1: essential for insulin- and IL-4-stimulated mitogenesis in hematopoietic cells

LM Wang, MG Myers, Jr, XJ Sun, SA Aaronson, M White, and JH Pierce
Science 17 September 1993: 1591-1594.
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Neuroblast specification and formation regulated by wingless in the Drosophila CNS

Q Chu-LaGraff and CQ Doe
Science 17 September 1993: 1594-1597.
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 The Culture of Zoocide

Robert W. Rydell
Science 17 September 1993: 1609-1610.
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 The Origins of Plagues

Walter DowdLe
Science 17 September 1993: 1610-1611.
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 Extracellular Organizers

Lance A. Liotta
Science 17 September 1993: 1611-1613.
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 Vignettes: Arthropods of Britain

Science 17 September 1993: 1612.
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 PRODUCTS & MATERIALS

Science 17 September 1993: 1620.
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