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Tag: "amounts" at biology news

Male elephants woo females with precise chemistry

... males, but when the ratio became balanced - equal amounts of plus and minus frontalin - males of all ages, as well as luteal-phase and pregnant females, were repulsed. Only ovulating females were attracted. The study's results indicate that the ratio of frontalin enantiomers allows other elephants to dist...

University of Arizona plant scientists to unravel maize genome

...ng billions of letters of genetic code yields vast amounts of data, which have to be stored, accessed and interpreted. BIO5's capabilities in bioinformatics help scientists manage and analyze complex data. The software used to generate the genetic map was developed by Carol Soderlund, who holds a research ...

Shorter colds, milder flu may follow from newly revealed immune mechanism

...ns. They found that the sick mice produced massive amounts of CCL5--about a hundred times more than they produced when healthy. "CCL5 was just off the chart compared to the other 30,000 mouse genes," Holtzman says. "Then the challenge was to figure out why CCL5 gene expression should be so far above everyt...

Novel protein complex enables survival in hostile environment

...billion years ago. Then, the reaction of the small amounts of oxygen with sulfide would have produced an incomplete oxidation product ?sulfite," he said. "Methanogens present during the oxygenation of earth had to face this sulfite." But Johnson and Mukhopadhyay could not find any sign of such ability in t...

Bugs expose underground carbon traffic system 10 times more important than fossil fuel burning

...nd that this particular PLFA contained significant amounts of 13C in cores not exposed to Collembola. However those soil cores that were exposed to collembola which fed on the mycorrhizal mycelia did not have 13C enriched PFLAs.. This research establishes that arbuscular mycorrhizal mycelia provide a major...

Researchers show key protein necessary for normal development of red blood cells

...dergo cell death, and produced significantly lower amounts of globin mRNA than those found in normal mice. Globin mRNA is a key player in gene expression that helps translate the DNA's genetic code. Lloyd and her colleagues identified that the role of KLF2 for the embryonic epsilon-globin genes is analogous...

Effective, safe anthrax vaccine can be grown in tobacco plants

...d doses of anthrax several times stronger than the amounts to which humans have been exposed. The next step for the anthrax vaccine would involve a company working with NIH to conduct clinical trials. Human subjects would be injected only with the vaccine and not with anthrax itself, and scientists would th...

'Creationism is not science' ?making the case for Darwin at UCL

...n. Today if you have an infection you need massive amounts of penicillin compared to that needed in the 1940s. The simple reason is that the bugs you are fighting have evolved." Commenting on whether this turn towards the Intelligent Design world view could hit the UK too, Professor Ruse (whose book The Evo...

ORNL leading effort to help harness power of Shewanella

Tremendous amounts of data being generated about a microbe adept at bioremediation will be more efficiently organized and shared through a new $3 million project headed by Oak Ridge National Laboratory. The award by the Department of Energy's Office of Science builds ...

Worms know bad food when they smell it

...particular set of neurons starts producing massive amounts of the neurotransmitter serotonin, and that this response is required for learning. "We think that this is the signal the worm is using to say 'I've gotten sick,'" Bargmann said. The role of serotonin suggests that this type of learning may be a p...

New methods offer insight into regulatory DNA

...te to disease, tools that will harness the massive amounts of DNA information and transform them into information of real biomedical utility. The methods described here, with the power of the HapMap data and the cell cultures available, will speed that transformation. ...

How the neuron sprouts its branches

...w to sort appropriate cargo molecules in the right amounts down different dendritic branches," said Ehlers. "After all, different dendritic branches can have different functional properties, molecular composition and electrical properties. So, when a cargo reaches a branch point, it's like a highway intersec...

Scientists show how thinking can harm brain cells

...e studies showed. "Stressing the cells with small amounts could trigger protective genes and induce adaptations that will make the dendrites more able to withstand insults," Bellizzi said. Diazoxide is not the only drug that would work, and others might be better, the researchers said. Memantine, a drug th...

Argonne researchers confirm lead in Beethoven's illness

...'s Argonne National Laboratory have found elevated amounts of lead in bone fragments belonging to 19th Centur..., consistent with their earlier finding of massive amounts of lead found in his hair. These results confirm the cause of his years of chronic debilitating illn...

Stem cells from muscles can repair cartilage

...eutic gene and enabled the delivery of appropriate amounts of BMP-4 protein to the injury site," they state, adding that the improved repair lasted for 24 weeks following transplantation. Further studies conducted by the authors (not yet published) have produced similar results. They conclude: "These finding...

DNA gene vaccine protects against harmful protein of Alzheimer's disease

...2. "By seven months, the mice are storing abundant amounts of amyloid-beta 42," said Dr. Rosenberg, who holds...antibody production, and the mice showed the large amounts of amyloid-beta 42 brain plaques normally seen in animals with these mutations. The gene injection ...

Infection 'alarm' yields clues to immune system behavior

...ere surprised by how sensitive cells were to small amounts and brief exposures to TNF," said Andre Levchenko, a Johns Hopkins assistant professor of biomedical engineering and senior author of the paper. "Our analysis may help drug companies solve problems with the regulation of immune response levels, and d...

Sequencing our seas

...ng said. But now with the ability to sequence vast amounts of DNA in shorter time periods, the science is pressing forward. DeLong and his colleagues saw a unique opportunity for a "proof-of-principle" study by combining new microbial genomic profiles with decades of data collected at Station ALOHA, a Natio...

Ocean 'dead zones' trigger sex changes in fish, posing extinction threat

...netic diversity, Wu says. It occurs when excessive amounts of plant nutrients, particularly nitrogen, accumulate in oceans, freshwater lakes and other waterways. These nutrients trigger the growth of huge algae and phytoplankton blooms. As these blooms die, they sink to the ocean floor where they are decompo...

Wyoming cloud seeding experiment begins this month

...ng said. But now with the ability to sequence vast amounts of DNA in shorter time periods, the science is pressing forward. DeLong and his colleagues saw a unique opportunity for a "proof-of-principle" study by combining new microbial genomic profiles with decades of data collected at Station ALOHA, a Natio...

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