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Science, New Series, Vol. 235, No. 4791, Feb. 20, 1987


Previous Issue: New Series, Vol. 235, No. 4790, Feb. 13, 1987
Next Issue: New Series, Vol. 235, No. 4792, Feb. 27, 1987


Front Matter (25 pp.)
United States Trade, p. 829
Philip H. Abelson


Letters
SDI Survey, p. 831
Steven Soter
Nuclear Winter Debate, pp. 831-832
Curt Covey; Bernd Heinrich; Joseph T. Bohanon; Anne H. Ehrlich; Paul R. Ehrlich; Harold A. Mooney; Russell Seitz
Nuclear Winter Debate: Response, p. 832
Eliot Marshall


Erratum: Court Rejects Rifkin in Biotech Cases., p. 832


News & Comment
Osteoporosis Reexamined: Complexity of Bone Biology is a Challenge, pp. 833-834
Barbara J. Culliton
Textbook Credits Bruise Psychiatrists' Egos, pp. 835-836
Eliot Marshall
The SSC's Price Tag Troubles Congress, pp. 837-838
Mark Crawford
Teacher Certification Program under Way, pp. 838-839
John Walsh
Treaty Compliance Rated Good, p. 839
Colin Norman
Alvin Trivelpiece of DOE is Named New Executive Officer of AAAS, p. 840
Barbara J. Culliton
BioTechnica Tests EPA Review Process, p. 840
Mark Crawford


Briefing
EPA Okays Field Test, p. 840
M.C.


Research News
Bright Synchrotron Sources Evolve, pp. 841-842
Arthur L. Robinson
Histocompatibility Restriction Explained, pp. 843-844
Jean L. Marx
Do-It-Yourself Universes, pp. 845-846
M. Mitchell Waldrop
Defect in Alzheimer's is on Chromosome 21, pp. 846-847
Deborah M. Barnes


Seabed Materials, pp. 853-860
James M. Broadus

Covalent Group IV Atomic Clusters, pp. 860-865
W. L. Brown; R. R. Freeman; Krishnan Raghavachari; M. Schlüter

Immunological Self, Nonself Discrimination, pp. 865-870
Jean-Gerard Guillet; Ming-Zong Lai; Thomas J. Briner; Soren Buus; Alessandro Sette; Howard M. Grey; John A. Smith; Malcolm L. Gefter


Reports
Dianion Stabilization by (M(C 5 (CH 3 ) 5 ) 2 ) + : Theoretical Evidence for a Localized Ring in (DDQ) 2-, pp. 871-873
Joel S. Miller; David A. Dixon
Conservation of Brain Amyloid Proteins in Aged Mammals and Humans with Alzheimer's Disease, pp. 873-877
Dennis J. Selkoe; Douglas S. Bell; Marcia B. Podlisny; Donald L. Price; Linda C. Cork
Characterization and Chromosomal Localization of a cDNA Encoding Brain Amyloid of Alzheimer's Disease, pp. 877-880
Dmitry Goldgaber; Michael I. Lerman; O. Wesley McBride; Umberto Saffiotti; D. Carleton Gajdusek
Amyloid β Protein Gene: cDNA, mRNA Distribution, and Genetic Linkage near the Alzheimer Locus, pp. 880-884
Rudolph E. Tanzi; James F. Gusella; Paul C. Watkins; Gail A. P. Bruns; Peter St George-Hyslop; Margaret L. Van Keuren; David Patterson; Susan Pagan; David M. Kurnit; Rachael L. Neve
The Genetic Defect Causing Familial Alzheimer's Disease Maps on Chromosome 21, pp. 885-890
Peter H. St George-Hyslop; Rudolph E. Tanzi; Ronald J. Polinsky; Jonathan L. Haines; Linda Nee; Paul C. Watkins; Richard H. Myers; Robert G. Feldman; Daniel Pollen; David Drachman; John Growdon; Amalia Bruni; Jean-Francois Foncin; Denise Salmon; Peter Frommelt; Luigi Amaducci; Sandro Sorbi; Silva Piacentini; Gordon D. Stewart; Wendy J. Hobbs; P. Michael Conneally; James F. Gusella
Cytochrome P-450-Catalyzed Formation of Δ 4 -VPA, a Toxic Metabolite of Valproic Acid, pp. 890-893
Allan E. Rettie; Albert W. Rettenmeier; William N. Howald; Thomas A. Baillie
Substance P Activation of Rheumatoid Synoviocytes: Neural Pathway in Pathogenesis of Arthritis, pp. 893-895
Martin Lotz; Dennis A. Carson; John H. Vaughan
Recombinant Interferon Enhances Monoclonal Antibody--Targeting of Carcinoma Lesions in vivo, pp. 895-898
John W. Greiner; Fiorella Guadagni; Philip Noguchi; Sidney Pestka; David Colcher; Paul B. Fisher; Jeffrey Schlom
Reversal of Chloroquine Resistance in Plasmodium falciparum by Verapamil, pp. 899-901
Samuel K. Martin; Ayo M. J. Oduola; Wilbur K. Milhous
U3 Sequences from HTLV-I and -II LTRs Confer px Protein Response to a Murine Leukemia Virus LTR, pp. 901-904
Haruo Kitado; Irvin S.-Y. Chen; Neil P. Shah; Alan J. Cann; Kunitada Shimotohno; Hung Fan


Book Reviews
Environmentalism and Equity, pp. 914-915
Distributional Conflicts in Environmental-Resource Policy
Allan Schnaiberg; Nicholas Watts; Klaus Zimmermann
Review author[s]: Henry Etzkowitz
Life of an Astrophysicist, pp. 915-916
My Daughter Beatrice
Edward Hill
Review author[s]: Gillian R. Knapp
Genetic Abnormalities, p. 916
The Consequences of Chromosome Imbalance
Charles J. Epstein
Review author[s]: Robert S. Sparkes
Japanese Prehistory, pp. 916-917
Prehistoric Hunter-Gatherers in Japan
Takeru Akazawa; C. Melvin Aikens
Review author[s]: Douglas K. Charles


Back Matter (28 pp.)

Previous Issue: New Series, Vol. 235, No. 4790, Feb. 13, 1987
Next Issue: New Series, Vol. 235, No. 4792, Feb. 27, 1987



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