Microbiology

Viruses have numerous tricks for dodging the immune system. In the September 7, 2009 issue of the Journal of Cell Biology, Stagg et al. reveal a key detail in one of these stratagems, identifying a protein that enables cyto¬megalovirus to shut down an antiviral defense (online August 31).

Biology

The drywood termite, Cryptotermes secundus, eavesdrops on its more aggressive subterranean competitor, Coptotermes acinaciformis, to avoid contact with it, according to scientists from CSIRO Entomology and the University of New South Wales at the Australian Defence Force Academy.

Health & Medicine

German scientists have identified a serious and previously misunderstood contaminant that brings the safety and efficacy of intravenous treatments into question. In a report published in the September 2009 issue of the Journal of Leukocyte Biology (http://www.jleukbio.org), they show how a common intravenous treatment used to boost blood pressure in ailing patients also contains substances called "advanced glycation end products," which trigger inflammation. These substances result from reactions that occur among the various proteins (called "posttranslational modification") within the intravenous fluid after it has been formulated for use. This study directly challenges today's prevalent belief that advanced glycation end products are not contaminants.

Biotechnology

Fast growing transgenic fish can revolutionise commercial fish farming and relieve the pressure on overexploited fish stocks. But what happens in the natural environment if transgenic fish escape? Researchers at the University of Gothenburg have studied transgenic fish on behalf of the EU and are urging caution: -Until further notice transgenic fish should be bred in closed systems on land, says Fredrik Sundström at the Department of Zoology, University of Gothenburg.

Molecular & Cell Biology

In the chilling science fiction movie Gattaca, Ethan Hawke stars as a man with "inferior genes" who assumes another's genetic identity to escape a dead-end future. The 1997 film illustrates the very real fear swirling around today's genome research — fear that private genetic information could be used negatively against us.

Biology
BiologyAugust 31, 2009 12:52 PM

Travelers to the neotropics—the tropical lands of the Americas—might be forgiven for thinking that all of the colorful insects flittering over sunny puddles or among dense forest understory are butterflies. In fact, many are not. Some are moths that have reinvented themselves as butterflies, converging on the daytime niche typically dominated by their less hairy relatives. Now, a new revision of the taxonomic relationships among one such group of insects, the subfamily Dioptinae, sheds light on the diversity of tropical moth species and presents a unique story of parallel evolution.




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