Tag: "distant" at biology news

Parasite or partner? Study suggests new role for junk DNA

...acellular parasites in our DNA leftovers from the distant evolutionary past. The big question in the field is: Are they still there because we cant get rid of them or do they have a function? L1s reproduce by using RNA and a process called reverse transcription to make complementary DNA copies of themselves...

Soil's love affair with carbon viewed with millimeter resolution

...equire bulky soil samples and weeks of analysis in distant laboratories to obtain results with the same or less accuracy, the LIBS system enables users to analyze a sample of soil from a 1-1/4 inch diameter core at millimeter resolution in about 15 minutes, researcher Michael Ebinger and his colleagues repor...

Brain signal boosts as monkey nears reward

...s in the May 30 Science. If youre working toward a distant goal, you must often keep working even if you dont like what you are doing very much, explained Richmond. It makes sense that there is such a signal that varies with degree of reward expectancy that keeps you on-task performing a long sequence of be...

UF researchers discover blood stem cells

...marrow stem cells to generate new blood vessels in distant organs." "This exciting advance in the field of regenerative medicine may ultimately enable us to understand the basis for building blood vessels in diseased tissues deprived of adequate oxygen," Orlic said. "Furthermore, based on these observations...

Expeditions find no evidence of ivory-billed woodpecker

...alysis of the ARU data proved that the sounds were distant gunshots, with reverberations that sounded to human ears like drumming on a hollow snag. "If there is good news here, it is in knowing that the ARU technology could provide independent and conclusive evidence as to the nature of these sounds," says F...

Findings show exceptional longevity runs in families

...d to live longer lives than cousins and other more distant relatives, suggesting that a small number of genes might influence exceptional longevity. In 2001, Dr. Perls and his colleagues found a region on chromosome 4 that is "highly suggestive" of genetic predisposition to exceptional longevity. Further stu...

Frozen 'lake' beneath Antarctica ideal to test sterile drilling techniques

...stem, such as black holes or the active centers of distant galaxies. AMANDA will become part of a larger, kilometer-scale neutrino observatory named IceCube, for which funding by NSF began earlier this year. Based on measurements down to 2.3 kilometers, the team estimated the temperature at the bottom of the...

Physics tip sheet #20 July 3, 2002

...s of a different nature. The relative speed of the distant body and lensing body is so small that the Earth's...d the Sun is relatively large. This means that the distant body appears twice in images taken from Earth. This rare combination of circumstances means that ast...

UCLA scientists develop prostate cancer tracking system

...pear as "hot spots," both in primary tumors and in distant metastases that were still too small to cause symp...ost immediately, not only in primary tumors but in distant organs that may be at risk as well. The Nature Medicine article states that "repetitive imaging over...

Clemson researchers find bacteria fighter that does not promote bacterial resistance

... be effective against acne bacteria which are more distant relatives to the Swiss cheese bacteria." The researchers have contracted with ImmuCell Corporation, a Portland, Maine -based biotechnology company, to jointly develop their work. ImmuCell produces innovative and proprietary products that improve anim...

Mice become first animals to produce other species' sperm

...produce fully functional sperm from evolutionarily distant species. The result has important implications for preserving the germ lines of critically endangered species as well as prized livestock. The study, in which male mice produced functional gametes first from other mice and then from pigs and goats, ...

UW scientists find genetic pathway to potent anticancer agents

...s that produce this class of toxins evolved in the distant past from a common ancestor. In nature, the microbes that make enediynes tend to be slow growing and produce the toxin to keep from being overwhelmed by more prolific competing microorganisms. Enediynes work by cleaving or shearing the target cell's ...

Islet cell transplantation for diabetes turns corner

...w that fragile islets can be safely transported to distant centers that lack their own specialized islet cell isolation facility. Moreover, surgeons at these centers have then been able to transplant their patients with the shipped islets and consistently achieve insulin independence. Ten years ago, reported...

Overlapping genetic and archaeological evidence suggests neolithic migration

... men have the same mutation, then they all share a distant paternal ancestor. Underhill studies pairs of mutations on the Y chromosome in current populations. He combines data about the geographic distribution of the mutations with information about when the mutations arose to trace historical migrat...

Seven E.O. Lawrence Award winners named

...butions to the discovery, through careful study of distant supernovae, that the expansion of the Universe is speeding up rather than slowing down. Perlmutter is an astrophysicist in the physics division of the Berkeley Lab. Santer, a physicist, was honored in the Environmental Science and Technology categor...

Shadow proteins in thymus - Clues to how immune system works?

...as thought incapable of producing proteins made by distant organs such as the liver, brain, and pancreas. But it appears that T cells in training may be learning the lesson while still in the thymus. Building on work of other groups, first author Mark Anderson, a research fellow in medicine at Joslin; Emily...

Ion channels allow bacteria to resist stomach acid

...These functions, however, had their origins in the distant evolutionary past, he said. "It seems a strong implication from our work in bacterial ion channels over the past five years that these are ancient proteins, and not specialized machines for the specialized cells such as nerve cells in higher organism...

JGI to decode DNA of destructive plant pathogen

...ophthora pathogens are literally destroyers from a distant (biological) kingdom," Tyler said. "The genome sequences of these two species will for the first time enable us to identify and target their vulnerabilities in order to control them." According to the NSF, the research project is also intended to enh...

Virginia Bioinformatics Institute to decode plant devourer genomes

...ophthora pathogens are literally destroyers from a distant kingdom. The genome sequences of these two species will for the first time enable us to identify and target their vulnerabilities in order to control them." Sequences of Phytophthora will further aid scientists in decoding the genomes of diatoms, i...

Impact of geography on species challenges paleontologists

...astern U.S. coast 3.5 million years ago were close distant cousins of each other. She will present her research at the Geological Society of America's 114th annual meeting in Denver Oct. 27-30. Stempien is studying the small bivalve, Mulinia, which started out in South America and took over the entire east c...

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