Tag: "animals" at biology news
Mouse Model Of Down Syndrome Offers Glimpse Into Role Of Specific Genes In TheDisorder
...the human situation. In addition, they said, these animals
can be used to assess potentialpharmacological agents and various forms of environmental enrichment for theirability to improve learning and behavior. Already, the researchers have beenable to improve the spatial learning deficits in the mice with t...
Georgia Scientists Study Salt Marsh To Understand Global Warming
...isms by providing a place wherethe young stages of animals
can grow rapidly. The 10-acre Sapelo study site also provided another advantage to theresearch team; years of research have been conducted at the site and,hence, a great deal is already known about the dynamics of theecosystem. The study represents a...
Molecular Key To Heart Failure Development
...tically inhibited. Theresearchers then mated these animals
with mice genetically bred to develop heartfailure...eart failure," Rockman says. "Whetherthey're young animals
or old animals--age 6 months or one year--we preventedit. The heart failure mice which also contain ...
Genetic Study Reveals Sumatran Tigers Are A Distinct Species From All Mainland Tigers
...e designed to maximize the genetic diversity ofthe animals
they seek to protect. Regulation of the illegal t...ations depend onsupport from the country where the animals
live, recognition of the specialnature of Sumatran tigers opens possibilities for education programs...
Drunken Fruit Flies Reveal Molecular Pathway Regulating Sensitivity To Alcohol
...nt genes from the fruit flies and thenexposing the animals
to alcohol as a way of revealing the role the missing geneswould normally play. When they knocked out a gene known as amnesiac, the fliesbecame more sensitive, or more inebriated, than their brethren.More importantly, however, when the researchers ...
Naked DNA Rejuvenates Rheumatoid Rodents
...manner in which the protein was administered tothe animals
determined whether or not the outcome was favorabl...r elicit an immune response, andinitial results in animals
have been encouraging. Plasmids injected directlyinto tissue have been used to tackle animal models...
Peptic Ulcers: Stress Does Matter, After All
... the body. Researchers are trying to trace in both animals
and humans how stress might promote H.pylori infection (present in most adults) into ulcers (which develop in few). For instance, the stomach secretes more acid under stress, which can probably help the bacteria multiply. Also, people under ...
Relapsing Fever Spirochete Switches Surface Proteins When It Changes Hosts
...ument and observe, and infection in the laboratory animals
is easier todetect." Currently, the RML scientists are exploring the protein's exact function todetermine the role it plays in transmission. By manipulating the genome of therelapsing fever spirochete, they can inactivate the gene that makes the p...
Ligand Scientists Discover Tissue-Selective Female Hormone Mimics
...say resultsmay not be predictive of any results in animals
or humans; (c) that these or anypotential products under development by Ligand or any of its partners may notreceive approval from the U.S. Food and Drug Administration or other authoritiesto market any of these products; (d) that, there may not be a...
Researchers Discover Way To Grow New Kidneys In Rats
...Hammerman and Rogers removed a kidney from several animals
andattached each foreign kidney to the ureter left behind. The ureter is a tube atthe base of a kidney that carries urine to the bladder. The researchersremoved the rats' other kidneys at this point and tested the chimeras' abilityto single-hande...
International Research Team Announces Discovery Of Two Species Of Feathered
...n the Earth's history."The presence of feathers in animals
that are not birds raises fundamentalquestions abo...nonykus andShuvuiaa, both long-legged, long-tailed animals
with stubby arms, which, despitetheir very odd appearance, are more closely related to modern birds ...
At Last, Zoologists May Know What Is Killing The World's Amphibians
...fungus is the primary cause ofdeath, or is killing animals
weakened by other factors, such as ultravioletradiation penetrating the atmosphere due to the thinned ozone layer oragricultural chemicals. "Many factors could be at work, but the fungus isprobably right up there," says Pessier. Nobody knows ...
Wildlife Dying At The Doorsteps Of World's National Parks, Study Says
... automobiles and trucks, and diseases fromdomestic animals
are killing grizzlies, tigers and other large pred... the study warns thatregional populations of these animals
may collapse if such mortality continues. The researchers have called for expanding "no-kill...
USGS Scientists Find New Invasive Fish Species In Florida
...s of three feet or more, are predators, feeding on animals
such as worms, insects, shrimp, crayfish, other fishes and frogs. Yet, said Nico, the eels are also able to survive weeks -- and possibly months -- without food. The eels are highly secretive, with most of their activities occurring at night. In the...
Discovery Of Plant-Like Metabolic Pathway In Common Parasites Supplies New Targets For Therapy
... life such as certain aminoacids and folate, which animals
get from eating plants. The plant-like <AHREF="http://www.hort.purdue.edu/rhodcv/hort640c/aromat/ar00007.htm">shikimatepathway , which McLeod's team found in these parasites, consists of a seriesof seven biochemical reactions catalyzed by sev...
A Synthetic Peptide Destroys Brain Plaque Implicated in Alzheimer's Disease
...y in humans.Typically, a drug must be evaluated in animals
before it reaches the earlieststages of human testing, a process that may take many years. Dr. Soto's compoundis in the earliest stages of animal testing. The beta-sheet breaker can cross the blood-brain barrier, according toongoing animal studi...
Detecting Deer: New Method For Counting Population In Urban Areas
...ettled areas. "It looks for all the world like the animals
are encroaching upon humans, butit's the other way around," notes Sexton. Counting The Herd The biologists captured, marked and released 69 deer between Dec. 2, 1996, andJan. 10, 1997. During a series of two-a-day flights the week of Jan. 11-17,19...
Fatal Frog Fungus Found In The United States
...icient that herpetologists typically find few dead animals
lying uneatenduring a lifetime of fieldwork, yet L... thecommon American toad. In neither case did the animals
seem to be suffering froma severe disease like the Arizona frogs....
Fragmentation Of Tropical Forests Can Create "Genetic Bottleneck," According To New University Of Georgia Study
..., for hundreds of years, bred crop plants and farm animals
to maintain ahealthy diversity of what were, before the 20th century, called traits. Now,with advanced techniques to determine the exact genetic makeup of individuals,scientists understand considerably more about how genes drift through populations. ...
"Scifish" Technology To Protect Alaska's Fisheries And Promote Sustainable Use
.... In response to over-fishing andbycatch-catching animals
that were not intended for harvest-regulationsworldwide have put restraints on common fishing practices. According to NSF program manager Sara Nerlove, one of the greatstrengths of the SBIR program is that "it can foster technologies that no...
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