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Tag: "unknown" at biology news

New gene scanning technology marks a major advance in disease research

...has been possible to find out whether there may be unknown rare genetic variations in the population which may cause mild forms of a particular disease or feature in just one or two individuals, or may even protect them against disease. Professor Day commented: 'This development enables us to look at the wh...

“Hitchhiking?Viruses as Cancer Drug Delivery System

...ats." When our ape ancestors moved -- for reasons unknown -- onto the open, relatively treeless savannah, they left behind the rain forest and its abundance of fruit and leaves, the mainstays of modern chimpanzee diets. Laden and Wrangham believe that savannah-dwellers may have adopted game as their primary...

The roots of civilization trace back to ... roots

...ats." When our ape ancestors moved -- for reasons unknown -- onto the open, relatively treeless savannah, they left behind the rain forest and its abundance of fruit and leaves, the mainstays of modern chimpanzee diets. Laden and Wrangham believe that savannah-dwellers may have adopted game as their primary...

Stem cells bring fast direct improvement, without differentiation, in acute renal failure

...lt from the improvement of tissue injury by as yet unknown factors released by them." * Future studies "will also have to define the possible contribution to organ protection made by the immunomodulatory effects of MSC, as well as potential late phase contributions to organ repair via differentiation of...

Neanderthal teeth grew no faster than comparable modern humans'

...00 years ago until their lineage failed for as-yet unknown reasons. Most researchers have argued that their life in extremely harsh, Ice Age-like environments, coupled with their limited technological skills, ultimately led to their demise. In a study published last year in the journal Nature, other resear...

From a Few Wild Ancestors, a Citrus Cornucopia

...ge -- helped the researchers identify specimens of unknown origin and differentiate between closely related species. Of the roughly 900 total accessions, about 400 of unknown, but probable, sexual origin were studied. The others were either known to be crosses from breeding programs or mutations from a pare...

Disrupting Cocaine-memories To Battle Addiction

... of hepatitis A cases in the U.S. that are from an unknown source," Dr. Amon said. "Just as the E. coli-contaminated beef outbreaks in the early 1990s prompted changes in epidemiological surveillance that have increased our knowledge of foodborne bacteria, the 2003 hepatitis A outbreaks demonstrated the pote...

Large-scale Computer Simulations Reveal New Insights Into Antibiotic Resistance

... of hepatitis A cases in the U.S. that are from an unknown source," Dr. Amon said. "Just as the E. coli-contaminated beef outbreaks in the early 1990s prompted changes in epidemiological surveillance that have increased our knowledge of foodborne bacteria, the 2003 hepatitis A outbreaks demonstrated the pote...

Use of Antibiotics for Acne May Increase Risk of Common Illness

... of hepatitis A cases in the U.S. that are from an unknown source," Dr. Amon said. "Just as the E. coli-contaminated beef outbreaks in the early 1990s prompted changes in epidemiological surveillance that have increased our knowledge of foodborne bacteria, the 2003 hepatitis A outbreaks demonstrated the pote...

New tools used to control foodborne hepatitis A outbreaks related to green onions

... of hepatitis A cases in the U.S. that are from an unknown source," Dr. Amon said. "Just as the E. coli-contaminated beef outbreaks in the early 1990s prompted changes in epidemiological surveillance that have increased our knowledge of foodborne bacteria, the 2003 hepatitis A outbreaks demonstrated the pote...

Newly Discovered Role for Heart Response Enzyme May Yield Better Heart Failure Therapy

...eceptors. "These studies demonstrate a previously unknown role for the protein phosphorylation activity of PI(3)K in receptor internalization and identify non-muscle tropomyosin as an important substrate of the enzyme's activity," Rockman said. "The findings may offer a new approach to the treatment of hear...

UIC researchers show protein routes messages in nerve cells

... as their neurotransmitter of choice. "It's still unknown how glutamate receptors get to precisely where they're supposed to go on a cell in order to mediate the neurotransmission," said Featherstone. "If the receptors are not in the right place, then the message becomes less efficient. Or if receptors are ...

Mechanism regulating tooth shape formulation found

...nes at the places of future cusps, it has remained unknown how cusps form at the right places. Computer simulations on tooth development have suggested that there should be a gene inhibiting induction of cusps. The research team has now identified this inhibitor to be a recently identified gene called ectod...

MicroRNA tweaks protein that controls early heart development

...ad in common, hoping to find clues to help predict unknown targets in mammals. He then used those criteria to search the entire mouse genome for potential microRNA targets. "If this method of predicting targets turns out to be correct and specific, I think it will go a long way to opening the field more bro...

Scientists focus on 'dwarf eye'

...or proper focus of images on the retina, a largely unknown mechanism that uses visual experience causes the eye to stop growing. Due to natural genetic mutations, some eyes continue to grow beyond this point, causing nearsightedness. Other mutations cause the eye to stop growing too soon, causing farsighted...

Drawing with DNA: 'Bioart' illuminates genomics

...f biologists around the globe run DNA sequences of unknown function through a lightning-fast online algorithm called BLAST ?typically submitting 200 to 400 base pairs, or "letters" of genetic code, to be matched against the billions of letters for known genes. Searching for similarities that can shed light o...

Gene expands malaria's invasion options

...on. "Activation of PfRh4 represents a previously unknown mechanism to switch invasion pathways and provides P. falciparum with exquisite adaptability in the face of receptor changes and immune system responses," the team concluded. The results have important implications for the design of anti-malaria ...

Researchers seek to discover what really happens when a virus enters the body

...tings to quickly identify known viruses, or to map unknown viruses to existing profiles to better predict their behavior and start appropriate treatment. Ultimately, their work should contribute to what starts an immune response. And as NIH's Matzinger says, knowing what initiates an immune response will a...

New Look at DNA Hints at Origin of UV Damage

...ersity Medical Center have identified a previously unknown family of virulence factors that make the bacterium responsible for the plague especially efficient at killing its host. In the process, the team not only demonstrated that the use of the common roundworm is a valid model for studying the virulence ...

Novel plague virulence factor identified

...ersity Medical Center have identified a previously unknown family of virulence factors that make the bacterium responsible for the plague especially efficient at killing its host. In the process, the team not only demonstrated that the use of the common roundworm is a valid model for studying the virulence ...

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