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Tag: "thousands" at biology news

Primates on the brink

...as the Sumatran orangutan, still number in the low thousands but are disappearing at a faster rate than other primates. The December tsunamis that devastated coastal Sumatra have triggered a possible new threat to orangutan habitat from resettlement of area residents. Changes to the list from 2002 reflect a d...

Internet viruses help ecologists control invasive species

...us, as the species spreads, it could cause loss of thousands of populations of zooplankton species in Ontario alone. ...

Insects, viruses could hold key for better human teamwork in disasters

...are systems can scale to networks with hundreds or thousands of first responders, as well as withstand unresponsive participants and poor communication channels. "This behavior is very similar to how rumors or fads spread in society and viruses spread in populations, both rather reliably and rapidly." Unders...

Young Blood Revives Aging Muscles, Stanford Researchers Find

...dition as you can possibly imagine," he said. With thousands of proteins, lipids, sugars and other small molecules in the blood serum, deciding where to look first would be tantamount to a roll of the dice. What's more, there's no evidence that the same blood component is responsible for reviving the different...

An (ecological) origin of species for tropical reef fish

...ts may differ more from one another than from fish thousands of miles away. An ecological speciation model for ... were found in ecologically similar habitats--even thousands of miles apart. Wrasses collected only 360 km apart along the Brazilian coast were genetically more...

Chemical Engineer Kao Explores Antibiotic Synthesis With DNA Chips

...gy and DNA base pairing to track the expression of thousands of genes simultaneously. The technique has tremend...cteria she focuses on, the actinomycetes, produces thousands of bioactive molecules, with many more discoveries sure to come. "When new molecules are discovered...

Fungus Effective Against Winged Termites

...to start a new colony that may grow to hundreds of thousands of wood-destroying termites. The researchers' find is significant, according to Raina, because many current control efforts focus on eliminating termite workers in colonies--not on destroying alates during the crucial period before they form new col...

Alien woodwasp, threat to US pine trees, found in N.Y.

...ably is established." Hoebeke was sifting through thousands of bark beetles caught in routine screening traps ...ebeke, a taxonomic expert who has examined tens of thousands of insects sent to him from agencies and scholars over the past 25 years. "I'm always on the lookout...

Computational Tool Predicts How Drugs Work In Cells, Advancing Efforts To Design Better Medicines

...nd are often difficult to tease out from among the thousands of gene products found in a typical organism. This “blindness?in the welter of potential cellular targets means that the process of designing therapeutic drugs is neither precise nor efficient. The BU research team sought to bring precision and effi...

Whole genome promoter mapping - Human Genome Project v2.0?

...ems have developed an efficient method to identify thousands of regulatory sequences in the human genome, according to a study published today in Nature. Genes are defined by their ability to generate a functional product. Thus the 'promoter' - a DNA sequence that controls when and where a gene product is gen...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

...the seas. The Healy returned to port July 26 with thousands of specimens from the Chukchi and Beaufort Seas an...rove new to science." Early findings amid several thousands specimens and images include suspected new species of jellyfish and benthic bristle worms, and the f...

Unique library of plant genes germinates, takes root at UNC

... average book lover, but it eventually will please thousands of plant scientists around the world. Through such researchers' work, it will undoubtedly contribute to improving crops that humans around the planet depend on every day, its developers say. Named Phytome, the unique library is a compilation of volu...

Ancient DNA helps clarify the origins of two extinct New World horse species

...ates, the patterns of mutations remain stable over thousands of generations. The mtDNA analysis of the South and North American horses provided evidence that stilt-legged horses, the Hippidion genus, and caballine, or true horses, all arose from a common lineage. The authors showed that the Hippidion genus is...

Program finds lost genes in nematode genome

...ase. Along with confirmed genes, WormBase includes thousands of predicted genes without evidence from complemen... starts with sequencing a random sample of tens of thousands of cDNA clones. Whereas the traditional approach leads to sequencing some genes thousands of times a...

Improved statistical tools reveal many linked loci

...e complicating a problem because you're looking at thousands of genes instead of one trait," says Kruglyak. In reality, the method creates statistical conclusions that are more precise, he explains, because you're using so much data. Storey et al. compared their method to another statistical method, called tw...

Mapping neuron connections in the brain

...r simulations of neural circuits involving tens of thousands of neurons with biologically realistic connections--and provide a practical way to begin untangling the mysteries of the brain. ### Citation: Amirikian B (2005) A phenomenological theory of spatially structured local synaptic connectivity. PLoS Com...

Researchers develop promising new gene network analysis method

...tates each year. Once the c-Myc switch is thrown, thousands of other genes start pumping out proteins or switching on other genes, which activates still more genes. One way to study this web of connections would be to set off the chain reaction and study it over time. To make that happen, Brown researchers ca...

Researchers find first evidence of venom system in extinct mammal

...echnician who prepared the fossil, which is one of thousands that the U of A researchers have collected over the years from the banks of the Blindman River near Red Deer, Alberta. Sun immediately took the fossil to Scott, who thought it was the first proof of a venomous capacity in an extinct mammal, but he t...

Major breakthrough in the treatment of cancers and infectious diseases

... these types of diseases, which affect hundreds of thousands of Canadians. Dr. Veillette's team identified one of the basic mechanisms controlling NK ("natural killer") cell activity. Produced by the immune system, NK cells are responsible for recognizing and killing cancer cells and cells infected by virus...

Self-assembled DNA buckyballs for drug delivery

...he rods that form the structure. How these tens of thousands of molecules were able to self-organize to form such an intricate and complex structure is still an open question, the researchers say. They are seeking collaborators to solve the puzzle. Luo and Ph.D. graduate students Soong Ho Um, Sang Yeon Kwon ...

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