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Science, New Series, Vol. 277, No. 5324, Jul. 18, 1997


Previous Issue: New Series, Vol. 277, No. 5323, Jul. 11, 1997
Next Issue: New Series, Vol. 277, No. 5325, Jul. 25, 1997


Front Matter (27 pp.)
Editorial: Communities: Virtual vs. Real, p. 295
Amitai Etzioni; Oren Etzioni


Letters
Bison Study Principal Investigator, p. 297
E. William Colglazier
Privatization of a Journal, pp. 297-300
Janet M. Boullin; Julianne Chappell; Claire Safran
On the Antibiotic Frontier, p. 300
David Wade; B. Brett Finlay; Pascale Cossart
Environmental Economics and Ecological Economics, pp. 300-301
Trudy Ann Cameron
Expanding Wetlands Globally, p. 301
Michael E. Valdez


Corrections and Clarifications: Treating AIDS Dementia, p. 301
Corrections and Clarifications: Arecibo Radar Mapping of the Lunar Poles: A Search for Ice Deposits, p. 301
Corrections and Clarifications: Is the NRC Ready for Reform?, p. 301
Corrections and Clarifications: New Clues for Two Toxicological Mysteries, p. 301
ScienceScope, p. 303
Jocelyn Kaiser


News and Comment
A Harsh Light Falls on NIF, pp. 304-307
James Glanz
Stewardship Gravy Train Could Prove a Short Trip, p. 305
Andrew Lawler
New CNRS Chief Gets Marching Orders, p. 308
Michael Balter
Clinton Backs Broad Genetic Safeguards, pp. 308-309
Eliot Marshall
Global Initiative Takes Shape Slowly, p. 309
Richard Gallagher
Academics See Benefits in Hong Kong's New Status, pp. 310-311
Dennis Normile


Research News
Is an Old Virus Up to New Tricks?, pp. 312-313
Jon Cohen
Yeast Protein Acting Alone Triggers Prion-Like Process, p. 314
Gretchen Vogel
Resurgent Forests Can Be Greenhouse Gas Sponges, pp. 315-316
Anne Simon Moffat
Hybrids Consummate Species Invasion, pp. 316-317
Wade Roush
How Male Animals Gain an Edge in the Mating Game, pp. 317-318
Elizabeth Pennisi
Comet Origin of Oceans All Wet?, p. 318
Donald Goldsmith
Hijacking a Cell's Chemical Paths to Make New Antibiotics, p. 319
Robert F. Service


Random Samples, p. 321
Constance Holden


Book Reviews
Avenues for Plants, pp. 326-327
The Evolutionary Biology of Plants.
Karl J. Niklas
Review author[s]: Douglas E. Soltis
Programs in Physics, p. 327
Conceptual Developments of 20th Century Field Theories.
Tian Yu CAO
Review author[s]: Arthur Fine


Perspectives
Water on the Sun: Molecules Everywhere, pp. 328-329
Takeshi Oka
GAP into the Breach, pp. 329-330
Stephen R. Sprang
How Does the Brain Organize Memories?, pp. 330-332
Howard Eichenbaum
Antigen Presentation: A Balanced Diet, p. 332
Michael Brenner; Steven Porcelli


Research Articles
The Ras-RasGAP Complex: Structural Basis for GTPase Activation and Its Loss in Oncogenic Ras Mutants, pp. 333-338
Klaus Scheffzek; Mohammad Reza Ahmadian; Wolfgang Kabsch; Lisa Wiesmüller; Alfred Lautwein; Frank Schmitz; Alfred Wittinghofer
Crystal Structure of Mouse CD1: An MHC-Like Fold with a Large Hydrophobic Binding Groove, pp. 339-345
Z.-H. Zeng; A. R. Castaño; B. W. Segelke; E. A. Stura; P. A. Peterson; I. A. Wilson


Reports
Water on the Sun: Line Assignments Based on Variational Calculations, pp. 346-348
Oleg L. Polyansky; Nikolai F. Zobov; Serena Viti; Jonathan Tennyson; Peter F. Bernath; Lloyd Wallace
High-Altitude Observations of the Polar Wind, pp. 349-351
T. E. Moore; C. R. Chappell; M. O. Chandler; P. D. Craven; B. L. Giles; C. J. Pollock; J. L. Burch; D. T. Young; J. H. Waite Jr.; J. E. Nordholt; M. F. Thomsen; D. J. McComas; J. J. Berthelier; W. S. Williamson; R. Robson; F. S. Mozer
Natural Occurrence of MgSiO3-Ilmenite and Evidence for MgSiO3- Perovskite in a Shocked L Chondrite, pp. 352-355
Thomas G. Sharp; Cornelia M. Lingemann; Catherine Dupas; Dieter Stöffler
The Ionosphere of Europa from Galileo Radio Occultations, pp. 355-358
A. J. Kliore; D. P. Hinson; F. M. Flasar; A. F. Nagy; T. E. Cravens
Experimental Simulations of Sulfide Formation in the Solar Nebula, pp. 358-360
Dante S. Lauretta; Katharina Lodders; Bruce Fegley Jr.
Evidence for Large-Scale Eddy-Driven Gyres in the North Atlantic, pp. 361-364
M. Susan Lozier
Maximum and Minimum Temperature Trends for the Globe, pp. 364-367
David R. Easterling; Briony Horton; Philip D. Jones; Thomas C. Peterson; Thomas R. Karl; David E. Parker; M. James Salinger; Vyacheslav Razuvayev; Neil Plummer; Paul Jamason; Christopher K. Folland
Precursor-Directed Biosynthesis of Erythromycin Analogs by an Engineered Polyketide Synthase, pp. 367-369
John R. Jacobsen; C. Richard Hutchinson; David E. Cane; Chaitan Khosla
Inhibition of Bax Channel-Forming Activity by Bcl-2, pp. 370-372
Bruno Antonsson; Franco Conti; AnnaMaria Ciavatta; Sylvie Montessuit; Shareta Lewis; Isabelle Martinou; Lilia Bernasconi; Alain Bernard; Jean-Jacques Mermod; Gonzalo Mazzei; Kinsey Maundrell; Franco Gambale; Remy Sadoul; Jean-Claude Martinou
Alternative Cleavage of Alzheimer-Associated Presenilins During Apoptosis by a Caspase-3 Family Protease, pp. 373-376
Tae-Wan Kim; Warren H. Pettingell; Yong-Keun Jung; Dora M. Kovacs; Rudolph E. Tanzi
Differential Effects of Early Hippocampal Pathology on Episodic and Semantic Memory, pp. 376-380
F. Vargha-Khadem; D. G. Gadian; K. E. Watkins; A. Connelly; W. Van Paesschen; M. Mishkin
In vitro Propagation of the Prion-Like State of Yeast Sup35 Protein, pp. 381-383
Sergey V. Paushkin; Vitaly V. Kushnirov; Vladimir N. Smirnov; Michael D. Ter-Avanesyan
Mating Type Switching in Yeast Controlled by Asymmetric Localization of ASH1 mRNA, pp. 383-387
Roy M. Long; Robert H. Singer; Xiuhua Meng; Isabel Gonzalez; Kim Nasmyth; Ralf-Peter Jansen


Technical Comments
Genetic Complexity and Parkinson's Disease, pp. 387-389
William K. Scott; Jeffrey M. Stajich; Larry H. Yamaoka; Marcy C. Speer; Jeffery M. Vance; Allen D. Roses; Margaret A. Pericak-Vance; T. Gasser; B. Müller-Myhsok; Z. K. Wszolek; A. Dürr; J. R. Vaughan; V. Bonifati; G. Meco; B. Bereznai; R. Oehlmann; Y. Agid; A. Brice; N. Wood; Michael H. Polymeropoulos
Experiments in a Parkinson's Rat Model, pp. 389-390
Roberto Pallini; Alessandro Consales; Liverana Lauretti; Eduardo Fernandez; Derek L. Choi-Lundberg; Martha C. Bohn


Tech.Sight
Massively Parallel Genomics, pp. 393+395+397-399+401+403
Stephen P. A. Fodor


Back Matter (41 pp.)

Previous Issue: New Series, Vol. 277, No. 5323, Jul. 11, 1997
Next Issue: New Series, Vol. 277, No. 5325, Jul. 25, 1997



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