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tag radioactivity immunology genetics genomics ecology

In Evolution's Garden
Megan Scudellari | Jun 1, 2013 | 9 min read
Raising one evolutionary question after another, Brandon Gaut has harvested a crop of novel findings about how plant genomes evolve.
Nonradioactive Probes Protect Scientists And Environment
Holly Ahern | Apr 29, 1990 | 5 min read
For many years, geneticists determined the genetic makeup of organisms by examining the physical characteristics of their offspring. But with the discovery of the structure of the DNA double helix, first published by James D. Watson and Francis H.C. Crick in 1953 (Nature, 171:964-7), the science of genetics was forever changed. Scientists soon developed techniques to study the genetic message found in all living cells at the molecular level. One of most important of these methods was the use of
Bioterrorism Research: New Money, New Anxieties
John Dudley Miller | Apr 6, 2003 | 8 min read
Ned Shaw US scientists have reason to feel both heady and scared. The federal government recently released unprecedented billions of dollars to fund bioterrorism research. Yet, the merits of this sudden shift in focus are being debated, and some worry that the money will be squandered or wasted. "I have been really very upset by the focus on bioterrorism," says Stanley Falkow, professor of microbiology and immunology and of medicine at Stanford University. "Everybody's talking about it, but th
Premade cDNA Libraries
Sarah Goforth | Apr 15, 2001 | 10 min read
Suppliers of Whole-organism cDNA Libraries Suppliers of Tissue-specific cDNA Libraries The questions of gene function, interaction, and regulation are central to the science of molecular biology. Despite the myriad of new technologies, products, and techniques produced by the genomics revolution, some old standards remain just as useful as ever. One such technology is the cDNA (complementary DNA) library. The sheer number of companies offering premade and custom cDNA libraries and products th
60 Members Elected to NAS
Barry Palevitz | Jun 25, 2000 | 6 min read
Editor's Note: On May 2, the National Academy of Sciences announced the election of 60 new members and 15 foreign associates from nine countries in recognition of their distinguished and continuing achievements in original research. Nearly half of the new members are life scientists. In this article, The Scientist presents photographs of some of the new members and comments from a few of them on their careers and on past and current research. A full directory of NAS members can be found online a
Distinguishing Th1 and Th2 Cells
Jeffrey Perkel | May 13, 2001 | 10+ min read
Reagents That Distinguish Th1 and Th2 cells Courtesy of R&D SystemsSchematic representation of cytokines influencing the development of antigen-activated naive CD4+ T cells into Th1 and Th2 cells. Editor's note: Although individual techniques are associated with specific researchers in this article, it should be noted that these investigators commonly use several different techniques to analyze T lymphocyte populations. The human body is constantly under siege. It must defend itself fr
Taking The Measure Of The Message
Laura De Francesco | Nov 22, 1998 | 9 min read
Date: November 23, 1998Product Comparison Getting a measure of even a single RNA species has never been easy. Every few years, a new technique comes along--Northerns, ribonuclease protection assays, RT-PCR--that makes the task only incrementally easier. But a quantum leap in technology took place just a few years ago with the introduction of cDNA arrays, and suddenly not just one but hundreds to thousands of target nucleic acids can be analyzed simultaneously and precisely. Since then, array te
Articles Alert
The Scientist Staff | Jun 12, 1988 | 7 min read
The Scientist has asked a group of expert. to periodically comment upon recent articles that they have found noteworthy. Their selectIons, presented here in every issue, are neither endorsements of content nor the result of systematic searching. Rather they are personal choices of articles they believe the scientific community as a whole may also find i.nteresting. Reprints of any articles cited here may be ordered through The Genuine Article, 8501 Market St., Philadelphia, Pa. 19004. BY SOK

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