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Previous Issue: New Series, Vol. 260, No. 5106, Apr. 16, 1993
Next Issue: New Series, Vol. 260, No. 5108, Apr. 30, 1993
Front Matter (22 pp.)
Editorial: Science and Technology in Government, p. 471
- Richard S. Nicholson; Philip H. Abelson
Letters
- DNA Fingerprinting Report, pp. 473-474
- B. S. Weir; Daniel L. Hartl; Richard C. Lewontin
- Extraterrestrial Intelligence, pp. 474-475
- Frank Drake; John D. Rummel; David M. Raup
ScienceScope, p. 479
- Richard Stone
News and Comment
- A Clouded Future for IBM Research, pp. 480-481
- David H. Freedman
- Drug Companies Join Forces In Search for AIDS Therapy, p. 482
- Jon Cohen
- A New Kind of Earmarking, p. 483
- Christopher Anderson
- Mirror, Mirror, Which Is the Fairest?, pp. 483-484
- Faye Flam
- At State Schools, Calculus Reform Goes Mainstream, pp. 484-485
- Barry Cipra
- AAAS's Very Own Red Scare, p. 486
- Wayne Biddle
- PCR Enzyme Patent Challenged, p. 486
- Peter Aldhous
Research News
- Secrets of Secretion Revealed, pp. 487-489
- Marcia Barinaga
- Ozone Takes a Nose Dive After The Eruption of Mt. Pinatubo, pp. 490-491
- Richard A. Kerr
- How to Drive Nucleic Acids Up a Tree, p. 491
- Ivan Amato
- OGLEing, MACHOs, and the Search for Dark Matter, pp. 492-493
- Gary Taubes
- Scientists Chase Gravity's Rainbow, p. 493
- Faye Flam
Random Samples, pp. 494-495
- Constance Holden
Perspective
- IL-12: Initiation Cytokine for Cell-Mediated Immunity, pp. 496-497
- Phillip Scott
Removal of Contaminants from Soils by Electric Fields, pp. 498-503
- Ronald F. Probstein; R. Edwin Hicks
Research Article
- Movement of the Guide Sequence During RNA Catalysis by a Group I Ribozyme, pp. 504-508
- Jin-Feng Wang; William D. Downs; Thomas R. Cech
Reports
- The Opposition Effect of the Moon: The Contribution of Coherent Backscatter, pp. 509-511
- Bruce W. Hapke; Robert M. Nelson; William D. Smythe
- Manganese Oxide Octahedral Molecular Sieves: Preparation, Characterization, and Applications, pp. 511-515
- Y. F. Shen; R. P. Zerger; R. N. DeGuzman; S. L. Suib; L. McCurdy; D. I. Potter; C. L. O'Young
- Vapor-Condensation Generation and STM Analysis of Fullerene Tubes, pp. 515-518
- Maohui Ge; Klaus Sattler
- Oxygen Diffusion in Perovskite: Implications for Electrical Conductivity in the Lower Mantle, pp. 518-521
- Bjarni Gautason; Karlis Muehlenbachs
- The Relation Between Biological Activity of the Rain Forest and Mineral Composition of Soils, pp. 521-523
- Y. Lucas; F. J. Luizão; A. Chauvel; J. Rouiller; D. Nahon
- Record Low Global Ozone in 1992, pp. 523-526
- J. F. Gleason; P. K. Bhartia; J. R. Herman; R. McPeters; P. Newman; R. S. Stolarski; L. Flynn; G. Labow; D. Larko; C. Seftor; C. Wellemeyer; W. D. Komhyr; A. J. Miller; W. Planet
- Tectonics and Volcanism of Eastern Aphrodite Terra, Venus: No Subduction, No Spreading, pp. 526-530
- Vicki L. Hansen; Roger J. Phillips
- Molecular Basis for Specific Recognition of Both RNA and DNA by a Zinc Finger Protein, pp. 530-533
- Karen R. Clemens; Veronica Wolf; Steven J. McBryant; Penghua Zhang; Xiubei Liao; Peter E. Wright; Joel M. Gottesfeld
- Knotting of a DNA Chain During Ring Closure, pp. 533-536
- Stanley Y. Shaw; James C. Wang
- Negative Regulation of G1 in Mammalian Cells: Inhibition of Cyclin E-Dependent Kinase by TGF-β, pp. 536-539
- Andrew Koff; Masahiko Ohtsuki; Kornelia Polyak; James M. Roberts; Joan Massagué
- Reversible Binding of Nitric Oxide by a Salivary Heme Protein from a Bloodsucking Insect, pp. 539-541
- José M. C. Ribeiro; Jo M. H. Hazzard; Roberto H. Nussenzveig; Donald E. Champagne; F. Ann Walker
- Regulation of TCR Signaling by CD45 Lacking Transmembrane and Extracellular Domains, pp. 541-544
- Siniša Volarević; Barbara B. Niklinska; Christopher M. Burns; Carl H. June; Allan M. Weissman; Jonathan D. Ashwell
- Rescue of Signaling by a Chimeric Protein Containing the Cytoplasmic Domain of CD45, pp. 544-546
- Robin R. Hovis; Jerald A. Donovan; Michael A. Musci; David G. Motto; Frederick D. Goldman; Susan E. Ross; Gary A. Koretzky
- Development of TH1 CD4+ T Cells Through IL-12 Produced by Listeria-Induced Macrophages, pp. 547-549
- Chyi-Song Hsieh; Steven E. Macatonia; Catherine S. Tripp; Stanley F. Wolf; Anne O'Garra; Kenneth M. Murphy
Technical Comments
- Delivery of Na+, K+-ATPase in Polarized Epithelial Cells, pp. 550-556
- Chiara Zurzolo; Enrique Rodriguez-Boulan; Cara J. Gottardi; Michael J. Caplan; Kathleen A. Siemers (Krzeminski); Rachel Wilson (Hammerton); Robert W. Mays; Timothy A. Ryan; Debra A. Wollner; W. James Nelson
Book Reviews
- Sea-Level Fluctuations, p. 565
- Phanerozoic Sea-Level Changes.
- Anthony Hallam
- Review author[s]: Edward Winterer
- Single-Cell Fossils, pp. 565-566
- Fossil Prokaryotes and Protists.
- Jere H. Lipps
- Review author[s]: Kenneth H. Nealson
- Managing Motion, pp. 567-568
- Vestibular and Brain Stem Control of Eye, Head and Body Movements.
- Hiroshi Shimazu; Yoshikazu Shinoda
- Sensing and Controlling Motion. Vestibular and Sensorimotor Function.
- Bernard Cohen; David L. Tomko; Fred Guedry
- Review author[s]: R. David Tomlinson
- New Haven Observers, pp. 568-569
- Astronomy at Yale, 1701-1968.
- Dorrit Hoffleit
- Review author[s]: Donald E. Osterbrock
- The Construction of Stars, pp. 569-570
- Structure and Evolution of Single and Binary Stars.
- C. W. H. De Loore; C. Doom
- Review author[s]: Scott J. Kenyon
- Books Received, pp. 570-573
Back Matter (19 pp.)
Previous Issue: New Series, Vol. 260, No. 5106, Apr. 16, 1993
Next Issue: New Series, Vol. 260, No. 5108, Apr. 30, 1993