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Tag: "true" at biology news

Marine bacterium suspected to play role in global carbon and nitrogen cycles

... the Sept. 22 issue of the journal Nature. As the true range and relationship of Archaea to other microbes is revealed, information about N. maritimus will serve as benchmarks for all microbiologists. Biochemical and genomic studies are already underway to learn the mechanisms by which N. maritimus uses...

Deep sea buffet for bone-devouring worms

...chanism of evolutionary change. This is especially true in the deep sea. Survival in some deep-sea environments requires capabilities that animals alone don't possess. So teaming up with a microbial partner is the secret of survival for many host animals living in such environments. Dr Goffredi says: "Me...

UQ researcher tracking key to healing the brain

...e in a haystack," Dr Rietze said. "The tried and true method is to look for particular markers on the outside of the cell, but this is a long and laborious process. "What we are doing is looking at a distinguishing attribute of stem cells, which is that they are relatively quiescent, or don't divide m...

From a Few Wild Ancestors, a Citrus Cornucopia

...and possibly citrons or blood oranges, if you’re a true connoisseur of fruit. But for ARS horticulturalis...represent more than 90 percent of the collection’s true diversity,?says Krueger. “That’s just 13 percent of the collection.?/p> That may sound surprisin...

Identical twins may have more differences than meet the eye

...ns had the most identical genomes. But that wasn't true for the oldest pairs of twins. Genetically speaking, these twins were the least alike. The process that alters gene expression and behavior without changing a gene's DNA sequence is called methylation. Plass, who is also part of the human cancer gen...

Scientists find evidence of catastrophic sand avalanches, sea level changes in Gulf of Mexico

...ns had the most identical genomes. But that wasn't true for the oldest pairs of twins. Genetically speaking, these twins were the least alike. The process that alters gene expression and behavior without changing a gene's DNA sequence is called methylation. Plass, who is also part of the human cancer gen...

Long-sought flower-inducing molecule found

...involved in an intense hunt trying to find out the true nature of "Florigen" which has been described as something of a "Holy Grail" for plant physiology. The reason is that the nature of "Florigen" is central for our understanding of how plant flowering is controlled. All attempts to identify a single su...

Environmental lessons from tsunami as world's coastal population doubles

...ct us in times of disaster. This now appears to be true for some areas of Asia affected by the tsunami. And it will certainly be true for coasts of the future." ...

New law for resolution allows unprecedented sharpness in fluorescence microscopy

...ement of knowledge. For biology, this statement is true even today, since focused light is the only way to examine living cells non-invasively. However, because of the wave nature of light, focused light is subject to diffraction. As early as 1873, Ernst Abbe recognized that this fact imposes an absolute ...

Molecular mechanism of feather formation found

...derlying assumptions of the model were found to be true in developing feathers. These findings suggest that simple relationships between developmental genes can provide the basis for the formation of complex forms. The researchers predict that a more complicated version of the model can be applied to the...

Scientists find a maturity gene in fly

...gs and wings elongate," Thummel says. "Now it is a true pupa, which is an immature adult. It essentially is an adult," except its organs continue to form as it spends another 3.5 days inside its pupal case, which is like a cocoon but made of hard cuticle. Then ?nine days after the egg was laid ?the adult ...

MWG Biotech expands siMAX?siRNA portfolio with new scales, lengths and design tools

...gs and wings elongate," Thummel says. "Now it is a true pupa, which is an immature adult. It essentially is an adult," except its organs continue to form as it spends another 3.5 days inside its pupal case, which is like a cocoon but made of hard cuticle. Then ?nine days after the egg was laid ?the adult ...

DNA traces evolution of extinct sabertooths and the American cheetah-like cat

...st closely related to the puma, rather than to the true African cheetah (Acinonyx jubatus). Miracinonyx and the true cheetah Acinonyx show remarkable morphological similarity, including elongated limbs and enlarged na...

Tiny avalanche photodiodes target bioterrorism agents

...um tube devices are expensive and bulky, hindering true systems miniaturization. The APD technology may see further use in the deployment of systems for secure battlefield communication. Wavelengths around 280 nanometers are referred to as the solar-blind region; in this region, the UV light is filtered ...

Discarded placentas deliver researchers promising cells similar to embryonic stem cells

... to the point that we can demonstrate these cells' true therapeutic benefit, parents could conceivably choose to bank their child's amniotic epithelial cells in the event they may someday be needed, as is sometimes done now with umbilical cord blood," commented Dr. Strom. The amnion is derived from the e...

New antibody shows promise as cure for anthrax

...determine if the antitoxin could protect against a true infection with anthrax spores. "We expected the antitoxin to extend the lifespan of the infected animals," says Patterson, "but since we did not couple it with antibiotics, we thought that the bacteria would continue to replicate, and the increasing...

Studies on human genome variation provide insight into disease

...r story," explains Cardon. When this is the case, true disease genes cannot be distinguished from their anonymous genetic 'twins.' "Research in human genetic variation is rapidly moving towards realizing our aims of improving diagnosis of common diseases such as diabetes and heart disease," says Cardon,...

Housecat-sized Siberian tiger cubs get collared

...r story," explains Cardon. When this is the case, true disease genes cannot be distinguished from their anonymous genetic 'twins.' "Research in human genetic variation is rapidly moving towards realizing our aims of improving diagnosis of common diseases such as diabetes and heart disease," says Cardon,...

Chernobyl: The true scale of the accident

...aims to help the affected countries understand the true scale of the accident consequences and also sugges...gh doses to the thyroid gland. This was especially true of children who drank milk from cows who had eaten contaminated grass. Since iodine concentrates in ...

Give thanks for the cranberry, say dental researchers

...on the surface of the bladder. Perhaps the same is true in the mouth, where bacteria use adhesion molecules to hold onto teeth," Koo said. Koo's team also found evidence that cranberry juice disrupts the formation of the building block of plaque, known as a glucan. Like a mason using cement to build a wa...

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