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Science, New Series, Vol. 260, No. 5104, Apr. 2, 1993


Previous Issue: New Series, Vol. 259, No. 5103, Mar. 26, 1993
Next Issue: New Series, Vol. 260, No. 5105, Apr. 9, 1993


Front Matter (13 pp.)
Editorial: Improvements in Health Care, p. 11
Philip H. Abelson


Letters
EMF and Cancer, pp. 13-14+16
ORAU Panel on Health Effects of Low-Frequency Electric and Magnetic Fields; Anders Ahlbom; Maria Feychting
Drug Abuse Research, p. 16
Richard A. Millstein


Corrections and Clarifications: Science, Technology, and National Goals, p. 16


Policy Forum
Uncertainty, Resource Exploitation, and Conservation: Lessons from History, pp. 17+36
Donald Ludwig; Ray Hilborn; Carl Waters


ScienceScope, p. 19
Richard Stone


News and Comment
Computing's Controversial Patron, pp. 20-22
Elizabeth Corcoran
American Family Tree Gets New Root, p. 22
Ivan Amato
Researchers Win Decision on Knockout Mouse Pricing, pp. 23-24
Christopher Anderson
NSF Wins, NIH Loses in Clinton's 1994 Budget, pp. 24-25
Christopher Anderson
The Greening of the National Labs, p. 25
Eliot Marshall


Random Samples, pp. 26-27
Traci Watson


Research News
Huntington's Gene Finally Found, pp. 28-30
Virginia Morell
Toxicologists-and Snow-Descend on New Orleans, pp. 30-31
Richard Stone
Ocean-in-a-Machine Starts Looking Like the Real Thing, pp. 32-33
Richard A. Kerr
Pinning Down a Missing Link in Massive Stars, pp. 34-35
Gary Taubes


Perspectives
DNA Repair and Transcription: The Helicase Connection, pp. 37-38
Stephen Buratowski
Superstructures and Superconductivity, pp. 38-39
Zachary Fisk; Gabriel Aeppli


Light Emission from Silicon, pp. 40-46
S. S. Iyer; Y.-H. Xie

Cognitive Neurophysiology of the Motor Cortex, pp. 47-52
Apostolos P. Georgopoulos; Masato Taira; Alexander Lukashin


Research Articles
Molecular Mechanism of Transcription-Repair Coupling, pp. 53-58
Christopher P. Selby; Aziz Sancar
DNA Repair Helicase: A Component of BTF2 (TFIIH) Basic Transcription Factor, pp. 58-63
Laurent Schaeffer; Richard Roy; Sandrine Humbert; Vincent Moncollin; Wim Vermeulen; Jan H. J. Hoeijmakers; Pierre Chambon; Jean-Marc Egly


Reports
Diamonds in Dense Molecular Clouds: A Challenge to the Standard Interstellar Medium Paradigm, pp. 64-66
L. J. Allamandola; S. A. Sandford; A. G. G. M. Tielens; T. M. Herbst
Strong, Pure, and Uniform Carbon Fibers Obtained Directly from the Vapor Phase, pp. 66-68
Frederick T. Wallenberger; Paul C. Nordine
A Photoinduced Persistent Structural Transformation of the Special Pair of a Bacterial Reaction Center, pp. 68-71
N. Raja S. Reddy; Stephen V. Kolaczkowski; Gerald J. Small
Evidence for Photochemical Formation of H2O2 and Oxidation of SO2 in Authentic Fog Water, pp. 71-73
Yuegang Zuo; Jürg Hoigné
Aqueous-Phase Photochemical Formation of Peroxides in Authentic Cloud and Fog Waters, pp. 73-75
Bruce C. Faust; Cort Anastasio; John M. Allen; Takemitsu Arakaki
Genetic Conversion of a Fungal Plant Pathogen to a Nonpathogenic, Endophytic Mutualist, pp. 75-78
Stanley Freeman; Rusty J. Rodriguez
Skn-1a and Skn-1i: Two Functionally Distinct Oct-2-Related Factors Expressed in Epidermis, pp. 78-82
Bogi Andersen; Marcus D. Schonemann; Sarah E. Flynn; Richard V. Pearse; Harinder Singh; Michael G. Rosenfeld
Rhythmic Exocytosis Stimulated by GnRH-Induced Calcium Oscillations in Rat Gonadotropes, pp. 82-84
Amy Tse; Frederick W. Tse; Wolfhard Almers; Bertil Hille
Altered Growth of Human Colon Cancer Cell Lines Disrupted at Activated Ki-ras, pp. 85-88
Senji Shirasawa; Masanori Furuse; Nobuhiko Yokoyama; Takehiko Sasazuki
Phosphatidylinositol 3-Kinase Encoded by Yeast VPS34 Gene Essential for Protein Sorting, pp. 88-91
Peter V. Schu; Kaoru Takegawa; Michael J. Fry; Jeffrey H. Stack; Michael D. Waterfield; Scott D. Emr
Natural Selection and the Origin of jingwei, a Chimeric Processed Functional Gene in Drosophila, pp. 91-95
Manyuan Long; Charles H. Langley
Modulation of Neuronal Migration by NMDA Receptors, pp. 95-97
Hitoshi Komuro; Pasko Rakic
HLA-A11 Epitope Loss Isolates of Epstein-Barr Virus from a Highly A11+ Population, pp. 98-100
Pedro-Otavio de Campos-Lima; Riccardo Gavioli; Qian-Jin Zhang; Lesley E. Wallace; Riccardo Dolcetti; Martin Rowe; Alan B. Rickinson; Maria G. Masucci
Extracellular Access to the Na,K Pump: Pathway Similar to Ion Channel, pp. 100-103
David C. Gadsby; R. F. Rakowski; Paul De Weer
Developmental Regulation of Neural Response to FGF-1 and FGF-2 by Heparan Sulfate Proteoglycan, pp. 103-106
Victor Nurcombe; Miriam D. Ford; Jason A. Wildschut; Perry F. Bartlett


Book Reviews
Progress in the Infrared, p. 107
Infrared Astronomy with ISO.
Th. Encrenaz; M. F. Kessler
Review author[s]: Charles A. Beichman
Future-Oriented Physics, pp. 107-109
Dynamics of the Standard Model.
John F. Donoghue; Eugene Golowich; Barry R. Holstein
Review author[s]: Persis S. Drell
Life of an Evolutionist, pp. 109-110
William Diller Matthew, Paleontologist. The Splendid Drama Observed.
Edwin H. Colbert
Review author[s]: Léo F. Laporte
Books Received, p. 110


Back Matter (22 pp.)

Previous Issue: New Series, Vol. 259, No. 5103, Mar. 26, 1993
Next Issue: New Series, Vol. 260, No. 5105, Apr. 9, 1993



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