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Science, New Series, Vol. 276, No. 5309, Apr. 4, 1997


Previous Issue: New Series, Vol. 275, No. 5308, Mar. 28, 1997
Next Issue: New Series, Vol. 276, No. 5310, Apr. 11, 1997


Front Matter (27 pp.)
Editorial: New Tissues from Old, p. 15
David L. Stocum


Letters
Human Subject Research, p. 17
Dale G. Vander Hamm
Atopic Disease and Immunologic Response, pp. 17-19
David Duffy; Gene M. Shearer; Claire Chougnet; Minetta S. Shearer; J. M. Hopkin
Animal Alternatives in Germany, p. 19
Horst Spielmann
Rabbit Control in New Zealand, p. 20
Trevor H. Duston; Yvonne van Roy
Curing Rat Glioblastoma: Immunotherapy or Graft Rejection?, pp. 20-21
Andreas S. Beutler; Michaela S. Banck; Adriano Aguzzi; Dirk Wedekind; Hans J. Hedrich


Corrections and Clarifications: Crystal Structure of Protein Farnesyltransferase at 2.25 Angstrom Resolution, p. 21
Corrections and Clarifications: Kinetic Measurement of the Step Size of DNA Unwinding by Escherichia coli UvrD Helicase, p. 21
Corrections and Clarifications: Evaluating the Evidence for Past Life on Mars, p. 21
Corrections and Clarifications: Diversity and Pattern in the Developing Spinal Cord, p. 21
Corrections and Clarifications: Regulation of T Cell Receptor Signaling by Tryosine Phosphatase SYP Association with CTLA-4, p. 21
ScienceScope, p. 23
Jocelyn Kaiser


News and Comment
Tenure Turmoil Sparks Reforms, pp. 24-26
Constance Holden
NSF Adopts New Guidelines, p. 26
Jeffrey Mervis
NCI Reverses One Expert Panel, Sides with Another, pp. 27-28
Gary Taubes
Test Reactor Touted for Bomb Fuel, p. 28
Andrew Lawler
Illinois, San Diego Centers Win Renewed NSF Funding, p. 29
Jeffrey Mervis


Research News
Martian 'Microbes' Cover Their Tracks, pp. 30-31
Richard A. Kerr
Tracing the Identity of the First Toolmakers, p. 32
Ann Gibbons
Getting a Handle on Air Pollution's Tiny Killers, p. 33
Jocelyn Kaiser
Fractal Geometry Gets the Measure of Life's Scales, p. 34
Nigel Williams
Backup Gene May Help Muscles Help Themselves, p. 35
Wade Roush
Ancient Galaxy Walls Go Up; Will Theories Tumble Down?, p. 36
Tim Appenzeller
Supernovae Offer a First Glimpse of the Universe's Fate, pp. 37-38
Donald Goldsmith
Counterfeit Chromosomes for Humans, pp. 38-39
Wade Roush
New Proof Hides Cosmic Embarrassment, p. 39
James Glanz


Random Samples, p. 41
Constance Holden


Book Reviews
Evolutionary Transformations, p. 46
Early Vertebrates.
Philippe Janvier
Review author[s]: George V. Lauder
Trunk Lines, pp. 46-47
The Proboscidea. Evolution and Palaeoecology of Elephants and Their Relatives.
Jeheskel Shoshani; Pascal Tassy
Review author[s]: Malcolm C. McKenna


Perspectives
Seeing a Mountain in a Grain of Garnet, pp. 48-49
J. G. Liou; S. Maruyama; W. G. Ernst
The Cis-Trans Paradox of Integrase, pp. 49-51
Makkuni Jayaram
Coreceptors: Implications for HIV Pathogenesis and Therapy, pp. 51-52
John P. Moore


Policy Forums
Consumption: Challenge to Sustainable Development..., pp. 53-55
Norman Myers; Jeffrey R. Vincent; Theodore Panayotou
... or Distraction?, pp. 53+55-57
Jeffrey R. Vincent; Theodore Panayotou; Norman Myers


[Introduction], p. 59
Pamela J. Hines


Frontiers in Medicine: Regeneration
Liver Regeneration, pp. 60-66
George K. Michalopoulos; Marie C. DeFrances
Stem Cells in the Central Nervous System, pp. 66-71
Ronald McKay
Marrow Stromal Cells as Stem Cells for Nonhematopoietic Tissues, pp. 71-74
Darwin J. Prockop
Wound Healing-Aiming for Perfect Skin Regeneration, pp. 75-81
Paul Martin
Amphibian Limb Regeneration: Rebuilding a Complex Structure, pp. 81-87
Jeremy P. Brockes


Reports
Energy Conditions in the Epoch of Galaxy Formation, pp. 88-90
Matt Visser
An Occurrence of Metastable Cristobalite in High-Pressure Garnet Granulite, pp. 91-93
Robert S. Darling; I-Ming Chou; Robert J. Bodnar
Spatial Variability of Turbulent Mixing in the Abyssal Ocean, pp. 93-96
K. L. Polzin; J. M. Toole; J. R. Ledwell; R. W. Schmitt
The Atmospheric Aerosol-Forming Potential of Whole Gasoline Vapor, pp. 96-99
J. R. Odum; T. P. W. Jungkamp; R. J. Griffin; R. C. Flagan; J. H. Seinfeld
Metathesis of Alkanes Catalyzed by Silica-Supported Transition Metal Hydrides, pp. 99-102
Véronique Vidal; Albert Théolier; Jean Thivolle-Cazat; Jean-Marie Basset
Thermal Structure of Jupiter's Upper Atmosphere Derived from the Galileo Probe, pp. 102-104
Alvin Seiff; Donn B. Kirk; Tony C. D. Knight; Leslie A. Young; Frank S. Milos; Ethiraj Venkatapathy; John D. Mihalov; Robert C. Blanchard; Richard E. Young; Gerald Schubert
Equatorial X-ray Emissions: Implications for Jupiter's High Exospheric Temperatures, pp. 104-108
J. H. Waite Jr.; G. R. Gladstone; W. S. Lewis; P. Drossart; T. E. Cravens; A. N. Maurellis; B. H. Mauk; S. Miller
Gravity Waves in Jupiter's Thermosphere, pp. 108-111
Leslie A. Young; Roger V. Yelle; Richard Young; Alvin Seiff; Donn B. Kirk
The Receptor for the Cytotoxic Ligand TRAIL, pp. 111-113
Guohua Pan; Karen O'Rourke; Arul M. Chinnaiyan; Reiner Gentz; Reinhard Ebner; Jian Ni; Vishva M. Dixit
Coordination of Drosophila Metamorphosis by Two Ecdysone-Induced Nuclear Receptors, pp. 114-117
Kevin P. White; Patrick Hurban; Toshiki Watanabe; David S. Hogness
Bni1p, a Yeast Formin Linking Cdc42p and the Actin Cytoskeleton During Polarized Morphogenesis, pp. 118-122
Marie Evangelista; Kelly Blundell; Mark S. Longtine; Clinton J. Chow; Neil Adames; John R. Pringle; Matthias Peter; Charles Boone
A General Model for the Origin of Allometric Scaling Laws in Biology, pp. 122-126
Geoffrey B. West; James H. Brown; Brian J. Enquist
Flexibility in DNA Recombination: Structure of the Lambda Integrase Catalytic Core, pp. 126-131
Hyock Joo Kwon; Radhakrishna Tirumalai; Arthur Landy; Tom Ellenberger
A Transmembrane Helix Dimer: Structure and Implications, pp. 131-133
Kevin R. MacKenzie; James H. Prestegard; Donald M. Engelman


Science's Next Wave: Quality Control: A Rapidly Expanding Career Niche, p. 139
Nicole Ruediger

Back Matter (25 pp.)

Previous Issue: New Series, Vol. 275, No. 5308, Mar. 28, 1997
Next Issue: New Series, Vol. 276, No. 5310, Apr. 11, 1997



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