Articles

 This Week in SCIENCE

RUTH LEVY GUYER
Science 19 July 1991: 247.
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 Heroines and Role Models

MAXINE F. SINGER
Science 19 July 1991: 249.
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 Species Hybridization and Protection of Endangered Animals

GEORGE D. AMATO
Science 19 July 1991: 250.
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 Species Hybridization and Protection of Endangered Animals

RONALD M. NOWAK
Science 19 July 1991: 250-251.
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 Response

STEPHEN J. O'BRIEN and ERNST MAYR
Science 19 July 1991: 251-252.
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 Response

ERIC R. GLITZENSTEIN
Science 19 July 1991: 252.
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Erratum

Science 19 July 1991: 252.
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 SCIENCESCOPE

DAVID P. HAMILTON
Science 19 July 1991: 255.
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 Tilting at the Space Station

ELIOT MARSHALL
Science 19 July 1991: 256-258.
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 NASA Squeezed, NSF Expands—for Now

ELIOT MARSHALL
Science 19 July 1991: 257.
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 Greenhouse Role in Reef Stress Unproven

LESLIE ROBERTS
Science 19 July 1991: 258-259.
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 Geographic Fission on Fusion

DAVID P. HAMILTON
Science 19 July 1991: 259.
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 Does war on cancer equal war on poverty?

A Gibbons
Science 19 July 1991: 260.
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 Tilting Toward Megaprojects

COLIN NORMAN
Science 19 July 1991: 261.
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 Communist Academics Refuse to Fade Away

RICHARD SIETMANN
Science 19 July 1991: 261-262.
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 Promising AIDS drug looking for a sponsor

J Palca
Science 19 July 1991: 262-263.
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 The Growing Anti-HIV Armamentarium

JOSEPH PALCA
Science 19 July 1991: 263.
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 Brain Food in Computer Games

CONSTANCE HOLDEN
Science 19 July 1991: 264.
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 UK OKs RU-486

Science 19 July 1991: 264.
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 Who Are the Animal Rightsers?

Science 19 July 1991: 264.
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 SSC Fundraiser Resigns

Science 19 July 1991: 264.
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 Coming of Age for Mental Health

Science 19 July 1991: 265.
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 Skullduggery

Science 19 July 1991: 265.
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 Superchicken

Science 19 July 1991: 265.
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 Keeping up?

Science 19 July 1991: 265.
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 Alzheimer's research moves to mice

J Marx
Science 19 July 1991: 266-267.
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 Radio Astronomy's Crumbling Showpiece

M. MITCHELL WALDROP
Science 19 July 1991: 268-269.
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 A Speedier Way to Decompose Polygons

BARRY CIPRA
Science 19 July 1991: 270.
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 Dancing With Death at Unzen Volcano

RICHARD A. KERR
Science 19 July 1991: 271.
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 A Tentative Vote for Supersymmetry

DAVID P. HAMILTON
Science 19 July 1991: 272.
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 Oxygen activation at the diiron center of ribonucleotide reductase

L Que, Jr
Science 19 July 1991: 273-274.
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Fallout of Pyroclastic Debris from Submarine Volcanic Eruptions

KATHARINE V. CASHMAN and RICHARD S. FISKE
Science 19 July 1991: 275-280.
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Nonlinear Optical Materials

DAVID F. EATON
Science 19 July 1991: 281-287.
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Computations underlying the execution of movement: a biological perspective

E Bizzi, FA Mussa-Ivaldi, and S Giszter
Science 19 July 1991: 287-291.
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Mechanism of assembly of the tyrosyl radical-dinuclear iron cluster cofactor of ribonucleotide reductase

JM Bollinger, Jr, DE Edmondson, BH Huynh, J Filley, Norton, JR, and J Stubbe
Science 19 July 1991: 292-298.
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Expansion and Contraction of the Sahara Desert from 1980 to 1990

COMPTON J. TUCKER, HAROLD E. DREGNE, and WILBUR W. NEWCOMB
Science 19 July 1991: 299-300.
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Organic Molecular Soft Ferromagnetism in a Fullerene C₆₀

PIERRE-MARC ALLEMAND, KISHAN C. KHEMANI, ANDREW KOCH, FRED WUDL, KAROLY HOLCZER, STEVEN DONOVAN, GEORGE GRÜNER, and JOE D. THOMPSON
Science 19 July 1991: 301-302.
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Early Differentiation of the Earth and the Problem of Mantle Siderophile Elements: A New Approach

V. RAMA MURTHY
Science 19 July 1991: 303-306.
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A mechanical trigger for the trot-gallop transition in horses

CT Farley and CR Taylor
Science 19 July 1991: 306-308.
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Hybridization Between European and Africanized Honey Bees in the Neotropical Yucatan Peninsula

THOMAS E. RINDERER, J. ANTHONY STELZER, BENJAMIN P. OLDROYD, STEVEN M. BUCO, and WILLIAM L. RUBINK
Science 19 July 1991: 309-311.
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Transcription-dependent and transcription-independent nuclear transport of hnRNP proteins

S Pinol-Roma and G Dreyfuss
Science 19 July 1991: 312-314.
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Kinetic characterization of ribonuclease-resistant 2'-modified hammerhead ribozymes

WA Pieken, DB Olsen, F Benseler, H Aurup, and F Eckstein
Science 19 July 1991: 314-317.
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Deleted HTLV-I provirus in blood and cutaneous lesions of patients with mycosis fungoides

WW Hall, CR Liu, O Schneewind, H Takahashi, MH Kaplan, G Roupe, and A Vahlne
Science 19 July 1991: 317-320.
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Inhibition of entry of HIV-1 in neural cell lines by antibodies against galactosyl ceramide

JM Harouse, S Bhat, SL Spitalnik, M Laughlin, K Stefano, DH Silberberg, and F Gonzalez-Scarano
Science 19 July 1991: 320-323.
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Deposits of amyloid beta protein in the central nervous system of transgenic mice

DO Wirak, R Bayney, TV Ramabhadran, RP Fracasso, JT Hart, PE Hauer, P Hsiau, SK Pekar, GA Scangos, BD Trapp, and al. et
Science 19 July 1991: 323-325.
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Evidence for the effects of a superantigen in rheumatoid arthritis

X Paliard, SG West, JA Lafferty, Clements, JR, JW Kappler, P Marrack, and BL Kotzin
Science 19 July 1991: 325-329.
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Buckminsterfullerane: The Inside Story

MARTIN SAUNDERS
Science 19 July 1991: 330-331.
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 Controls for lesions of the nigrostriatal dopamine system

TE Robinson
Science 19 July 1991: 332.
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 Response

CHARLES R. GERFEN and THOMAS M. ENGBER
Science 19 July 1991: 332.
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 A Singular Genius

JONATHAN M. BORWEIN and PETER B. BORWEIN
Science 19 July 1991: 334-335.
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 A Gendered Life

MARCIA MILLMAN
Science 19 July 1991: 335-336.
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 Some Other Books of Interest

K. L.
Science 19 July 1991: 336.
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 Some Other Books of Interest

K. L.
Science 19 July 1991: 336.
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 Products & Materials

Science 19 July 1991: 338.
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