Bioassay

Also known as a biological assay, a bioassay is a measurement of the effects of a substance on living organisms.


In the News

Study Yields Mixed Results On Potential For Pine Trees To Store Extra
Southern pines appear to grow and conserve water somewhat better in the carbon-dioxide-enriched atmosphere expected by mid-century, a Duke University study has found. However, any growth spurts appear to diminish over time, due at least in part to the kind of hot and dry weather that likely may become more common in the future. Thus, the researchers concluded, enhanced growth of pines may not constitute a long-term sink for human-produced carbon dioxide which might ameliorate global warming.

Wired Test 2007: Burning Question -- How Do I Pick a Lens for My DSLR?
The great thing about a DSLR is that you're not stuck with just one lens, but can choose the right glass for any situation.

San Diego Biographies
Collection of biographies of individuals who have "played a significant role in San Diego history,"such as Clara Breed, Juan Rodriguez Cabrillo, Wyatt Earp, Gaspar de Portola, Jonas Salk, and Father Junipero Serra. Photos accompany most biographies. Browsable by name or status, such as Californios, architects, and leaders. From the San Diego Historical Society.

Cancer Drug Slows Poxvirus In Mice
Mice given a relatively new cancer drug can survive an otherwise lethal dose of vaccinia virus, a relative of smallpox virus, report scientists supported by NIAID. The findings, say the investigators, suggest that Gleevec or similar drugs might be useful in preventing adverse side effects of smallpox vaccine. The classic smallpox vaccine is made from live, weakened vaccinia virus and is not recommended for people with compromised immunity, except in emergency situations where they may have been exposed to smallpox virus.

Fossils Of Ancient Sea Monster Found In Montana
A complete skull of a long-necked plesiosaur has been discovered in Montana. The 70-million-year-old skull is one of the best specimens of its kind found in North America.

Researchers Develop Resin Beads That Capture Mad Cow Disease Agent Fro
For the first time, experimental results indicate that it is possible to use a resin filter to remove harmful prion proteins from the blood of an infected animal, a finding that has major implications for the removal of infectious prion proteins -- the agents associated with variant Creutzfeldt-Jakob disease, mad cow disease, scrapie and other prion diseases in animals -- during blood transfusions.

Sexual Behavior, Genetics Linked To Kidney Infections
Researchers at Seattle-based Group Health Cooperative and the University of Washington (UW) report that some of the same factors that put women at risk for simple, lower urinary tract infections (UTIs)--as well as some unexpected factors--also make them susceptible to more serious kidney infections.

High Speed on the High Seas
Tricked-out yachts race across the globe on adjustable hydraulic keels, reaching speeds of up to 40 mph. By Carl Hoffman from Wired magazine.

[Ironic] LONDON: A jailed cocaine dealer is working as Santa Claus on
John Tams, who dons beard, boots and red suit to work in a cafe's Christmas grotto, said he wanted to give something back to the community...

Shoe Leather As A Renewable Resource: Penn Biologists Invent Power-Gen
If you already have a little spring in your step, a team of biologists at the University of Pennsylvania would like to put it to good use by adding a few more springs in the form of a power-generating backpack. Details of their prototype "Suspended-load Backpack"were announced today in the journal Science. The device converts mechanical energy from walking into electricity up to 7.4 Watts more than enough energy to power a number of portable electronic devices at once.


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