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Science, New Series, Vol. 257, No. 5068, Jul. 17, 1992


Previous Issue: New Series, Vol. 257, No. 5067, Jul. 10, 1992
Next Issue: New Series, Vol. 257, No. 5069, Jul. 24, 1992


Front Matter (28 pp.)
Editorial: Individual-Initiated Public Policy, p. 307
Daniel E. Koshland, Jr.


Letters
Women in Mathematics, pp. 309-310
Jacquelyn Savani
Miscarriage Study, p. 310
Julianne Byrne
Cold Fusion: Not Nuclear, p. 310
Maurice Goldhaber


Corrections and Clarifications, p. 310


Policy Forum
Is This Your Father's NIH? And Other Strategic Questions, pp. 312-313+414-415
Bernadine Healy


ScienceScope, p. 315
David P. Hamilton


News and Comment
Did Liability Block AIDS Trial?, pp. 316-317
Jon Cohen
U.S. Attorney Decides Not to Prosecute Imanishi-Kari, p. 318
David P. Hamilton
Western Leaders Disagree on Soviet Reactor Safety Plan, pp. 319-320
Eliot Marshall
Oil-Cleanup Method Questioned, pp. 320-321
Richard Stone


Random Samples, pp. 322-323
Constance Holden


Research News


Sex and Evolution
The Evolution of Sexes, pp. 324-326
Alun Anderson
Swallows and Scorpionflies Find Symmetry Is Beautiful, pp. 327-328
Matt Ridley
Barbary Macaques Challenge Theory of Female Choice, pp. 329-330
Ann Gibbons

Speeding Up a Chemical Game of Chance, pp. 330-331
Ivan Amato
Black Holes: A New Heavyweight Champ, p. 331
Tim Appenzeller
Researchers Get a First Look at the Versatile TGF-β Family, p. 332
Michelle Hoffman


Special Section: Science Innovations
How Technique is Changing Science, pp. 344-349
Stephen S. Hall
The Trajectory of Techniques: Lessons From the Past, pp. 350-353
Robert P. Crease


Research Article
Dynamics of Cluster-Surface Collisions, pp. 355-361
Charles L. Cleveland; Uzi Landman


Reports
Surface and Bulk Charge Density Wave Structure in 1T-TaS2, pp. 362-364
B. Burk; R. E. Thomson; John Clarke; A. Zettl
Direct Electrochemical Measurements Inside a 2000 Angstrom Thick Polymer Film by Scanning Electrochemical Microscopy, pp. 364-366
Michael V. Mirkin; Fu-Ren F. Fan; Allen J. Bard
Predatorial Borings in Late Precambrian Mineralized Exoskeletons, pp. 367-369
Stefan Bengtson; Yue Zhao
Crystal Structure of Transforming Growth Factor-β2: An Unusual Fold for the Superfamily, pp. 369-373
Sun Daopin; Karl A. Piez; Yasushi Ogawa; David R. Davies
Ocean Warming and Sea Level Rise Along the Southwest U.S. Coast, pp. 373-375
Dean Roemmich
Machining Oxide Thin Films with an Atomic Force Microscope: Pattern and Object Formation on the Nanometer Scale, pp. 375-377
Yun Kim; Charles M. Lieber
Recovery from Hemophilia B. Leyden: An Androgen-Responsive Element in the Factor IX Promoter, pp. 377-379
Merlin Crossley; Michael Ludwig; Kathryn M. Stowell; Piet De Vos; Klaus Olek; George G. Brownlee
Cloning of the γ Chain of the Human IL-2 Receptor, pp. 379-382
Toshikazu Takeshita; Hironobu Asao; Kiyoshi Ohtani; Naoto Ishii; Satoru Kumaki; Nobuyuki Tanaka; Hiroshi Munakata; Masataka Nakamura; Kazuo Sugamura
Dendritic Cells Exposed to Human Immunodeficiency Virus Type-1 Transmit a Vigorous Cytopathic Infection to CD4+ T Cells, pp. 383-387
Paul U. Cameron; Peter S. Freudenthal; Jeanne M. Barker; Stuart Gezelter; Kayo Inaba; Ralph M. Steinman
Negative Inotropic Effects of Cytokines on the Heart Mediated by Nitric Oxide, pp. 387-389
Mitchell S. Finkel; Carmine V. Oddis; Timothy D. Jacob; Simon C. Watkins; Brack G. Hattler; Richard L. Simmons
Structure and Functional Expression of an ω-Conotoxin-Sensitive Human N-Type Calcium Channel, pp. 389-395
Mark E. Williams; Paul F. Brust; Daniel H. Feldman; Saraswathi Patthi; Susan Simerson; Azarnoush Maroufi; Ann F. McCue; Gönül Veliçelebi; Steven B. Ellis; Michael M. Harpold
Membrane Depolarization Induces p140 trk and NGF Responsiveness, But Not p75 LNGFR , in MAH Cells, pp. 395-397
Susan J. Birren; Joseph M. Verdi; David J. Anderson
The Role of GABAB Receptor Activation in Absence Seizures of Lethargic (lh/lh) Mice, pp. 398-401
David A. Hosford; Suzanne Clark; Zhen Cao; Wilkie A. Wilson, Jr.; Fu-hsiung Lin; Richard A. Morrisett; Alexandre Huin
Nitric Oxide: A Physiologic Mediator of Penile Erection, pp. 401-403
Arthur L. Burnett; Charles J. Lowenstein; David S. Bredt; Thomas S. K. Chang; Solomon H. Snyder


Technical Comments
On Somatic Recombination in the Central Nervous System of Transgenic Mice, pp. 404-410
Asa Abeliovich; David Gerber; Osamu Tanaka; Motoya Katsuki; Ann M. Graybiel; Susumu Tonegawa; Masao Matsuoka; Fumikiyo Nagawa; Linda Kingsbury; Hitoshi Sakano
Unraveling the Structure of IL-2, pp. 410-413
J. Fernando Bazan; David B. McKay


Book Reviews
Darwin Socially Situated, pp. 419-420
Darwin.
Adrian Desmond; James Moore
Review author[s]: Frank M. Turner
Molecular Panselectionism, pp. 420-421
The Causes of Molecular Evolution.
John H. Gillespie
Review author[s]: Brian Charlesworth
Astronomical Oddities, pp. 421-422
Unusual Telescopes.
Peter L. Manly
Review author[s]: Ruth Peterson
Books Received, p. 422


Back Matter (30 pp.)

Previous Issue: New Series, Vol. 257, No. 5067, Jul. 10, 1992
Next Issue: New Series, Vol. 257, No. 5069, Jul. 24, 1992



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