scientific american - 1997 09 - building doors into cells
scientific american - 1997 09 - building doors into cells
... GRACE Copyright 1997 Scientific American, Inc. In Search of AIDS-Resistance Genes Scientific American September 1997 49 blood cells from two of these men indi- cated that the CCR5 protein was ab- sent ... MEMORIES WHY WE CAN REMEMBER EVENTS THAT NEVER HAPPENED Building doors into cells Copyright 1997 Scientific American, Inc. M aking a telephone or two- way radio th...
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scientific american - 1997 12 - building the biggest
... Analysis48 Scientific American December 1997 CYBER VIEW On-line Advertising Goes One-on-One DAVID SUTER 12.97.SCI.CIT.5P.DOM 8/7/98 12:44 PM Page 48 Copyright 1997 Scientific American, Inc. H eat ... 12:41 PM Page 29 Copyright 1997 Scientific American, Inc. News and Analysis32 Scientific American December 1997 O f all places on earth, rivers and lakes are the most dan-...
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scientific american - 1993 05 - building soft machines from smart gels
... and depression. Scientific American (ISSN 003 6-8 733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 1001 7-1 111. Copyright © 1993 by Scientific American, Inc. ... Canada 80 0-3 3 3-1 199; other 51 5-2 4 7-7 631. Postmaster: Send address changes to Scientific American, Box 3187, Harlan, Iowa 51537. Reprints available: write Repri...
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scientific american - 1993 09 - special issue - life, death, and the immune system
... antigen-presenting cells entering through the afferent lymphatic vessels. T cells gener- ally become activated by antigen in the paracortex; acti- vated B cells become antibody-producing plasma cells ... injected can- didate human stem cells into these mice and showed that they could thereby reconstitute the blood-forming and im- mune systems. Interestingly, the hu- man-derived t...
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scientific american - 1994 09 - conquering lyme disease
... budget, way behind SCIENTIFIC AMERICAN September 1994 23 Copyright 1994 Scientific American, Inc. schedule and eating into the base pro- gram. I have received hundreds of let- ters from the science ... appendix explains how to cross- reference ICD-IX and ICD-X codes. So why does DSM-IV use codes from an earlier version of ICD? ÒIt may take another seven years before ICD-X stan- dards...
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scientific american - 1995 09 - 150th anniversary issue - key technologies for the 21st century
... might “turn into an 800-mile candle.” Oil in the Komi Repub- lic, with its higher paraf- fin content, is much more apt to solidify than Alas- kan oil. Moreover, be- cause an untreated mix- ture of ... forms of Òself-organiza- tion.Ó In the same way, Goldstein sug- gests, therapists may help prod patients into healthier, more self-aware states. After GoldsteinÕs presentation, sever- al aud...
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scientific american - 1996 09 - special issue - what you need to know about cancer
... ungulates—hoofed vertebrates related to deer—lived be- fore the Cretaceous-Tertiary extinc- tion, which wiped out the dinosaurs 65 million years ago. Eighty-five-million- year-old jaws and teeth, clearly from an ... growth-stimulatory cir- cuits. One such suppressor is the prod- uct of the NF-1 gene. This cytoplasmic molecule ambushes the Ras protein be- fore it can emit its growth-promoting...
Ngày tải lên: 12/05/2014, 15:15
scientific american - 1997 01 - parkinson's disease
... Zorpette News and Analysis36 Scientific American January 1997 @HOME WEB PAGE is a gate into information thickets. @HOME Copyright 1996 Scientific American, Inc.Copyright 1996 Scientific American, Inc. G eneticists ... Analysis42 Scientific American January 1997 CYBER VIEW No More 9 to 5 DAVID SUTER Copyright 1996 Scientific American, Inc.Copyright 1996 Scientific Ame...
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scientific american - 1997 02 - found - 1,000 galaxies
... Bell Boeing 609 will actu- ally be an updated version of the exper- imental, 1970s-era XV-15, which was a test-bed for a military tilt-rotor known as the V-22 Osprey. The V-22’s devel- opment program, ... already been sketched for 1 9-, 3 1-, 3 9- and 75-pas- senger craft) and new federal regula- tions governing the certification and op- eration of tilt-rotors in heavily populat- ed ar...
Ngày tải lên: 12/05/2014, 15:20
scientific american - 1997 03 - the rising seas - how much of a threat
... Schneider News and Analysis22 Scientific American March 1997 Copyright 1997 Scientific American, Inc. News and Analysis24 Scientific American March 1997 T he first time that paleontolo- gist Olivier Rieppel ... Analysis Scientific American March 1997 37 CYBER VIEW Where the Money Is DAVID SUTER Copyright 1997 Scientific American, Inc. F rom afar, the sun does not lo...
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