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Tag: "completely" at biology news

Finding an answer to Darwin's Dilemma

...he oldest sediments on the Avalon Peninsula, which completely lack animal fossils, were deposited during a time when there was little or no free oxygen in the world’s oceans," says Dr. Narbonne. "Immediately after this ice age there is evidence for a huge increase in atmospheric oxygen to at least 15 per cent o...

A new target for painkillers

...4 hours after the drug was given. The highest dose completely reversed the hypersensitivity caused by sciatica, with no adverse effects. Daily injections "produced a sustained analgesic effect," the researchers wrote. RgIA was such a potent pain reliever that "about 10 billionths of an ounce reversed the hyp...

Rising ocean temperatures, pollution have oysters in hot water

...xample, a century ago, the oyster population could completely filter the water in the Chesapeake Bay in three days. Today, with the oyster population continuing to decline from poor water quality and disease, it would take a year to filter the same amount of water, she said. In addition to filtering water, oyst...

Replacing insulin is top-ranked breakthrough foreseen for health in developing world

...emic sectors in China: "Just like cell phones have completely revolutionized communication in the developing world, biotechnology -- and in particular regenerative medicine -- could in the future provide new ways to deal with old health problems plaguing millions of people." ...

'Trojan Horse' agent halts bone metastasis in mice

A novel vascular targeting agent completely prevented the development of bone tumors in 50 percent of the mice tested in a preclinical study, providing early evidence that it could treat, or thwart, growth of tumors in bone, a common destination for a number of cancers when they start to sprea...

Most important actors in the growth process of neurons identified

...he growth of axons and the activity of neurons are completely independent of each other. This new finding can le...e growth of neurons. Axonal growth turns out to be completely independent of neuronal activity. This finding brings greater clarity to the axon's growth process -...

Molecular 'signature' protects cells from viruses

...attack more cells. 'However, the cells are not completely at the mercy of a virus attack,' Professor Gunther...immune reaction and initiate cell suicide opens up completely new perspectives for the therapy of virus infections and cancer cases: for example, RNA chains with ...

Biologists probe the machinery of cellular protein factories

...oller and others proved he was right. "It was a completely heterodox view when we first proposed it, but it is now the accepted paradigm," said Noller, who directs the Center for Molecular Biology of RNA at UCSC. "Our latest results confirm that the ribosomal RNA is really the key to ribosome function. The p...

Older men treated for early prostate cancer live longer than those who are not

...in the study, because observational data can never completely adjust for potential selection bias and confounding, our results must be validated by rigorous randomized controlled trials of elderly men with localized prostate cancer before the findings can be used to influence treatment decisions." ...

The first tree genome is published: Poplar holds promise as renewable bioenergy resource

...nd only the third plant to date to have its genome completely sequenced and published. The first, back in 2000, was the tiny weed, Arabidopsis thaliana, an important model for plant genetics. Rice was the second, two years ago. Populus trichocarpa is one of the tallest broadleaf hardwood trees in the western U....

Tiny bones rewrite textbooks

...rthy. "It also suggests that New Zealand was not completely submerged, as some scientists thought, when sea levels were high about 25 to 30 million years ago." The team believes that more mammal specimens may emerge, perhaps even species that pre-date the split between pouched marsupials and live-bearing pl...

Stanford discovery may help predict when toxoplasma can be deadly

...no better way than to introduce a kinase that can completely alter the entire physiology of that host cell," said Boothroyd. The findings may play a role in helping pregnant women who become infected for the first time with the parasite. If doctors can test whether the women have one of the more virulent ...

Flu shot effective against drifted influenza, nasal spray vaccine less so

...s about vaccine protectiveness that we still don't completely understand." "It may be that the difference in effectiveness between the shot and the spray can be attributed to poorer protection against type B infections in participants given FluMist," Monto said, but that's not clear from this study. The l...

UCSD researchers create roadmap to integrin activation

...on of blood clots, by binding to the receptors and completely blocking their function. However, long-term administration of similar drugs doesn't work, in part because of the risk of serious bleeding complications in chronic use. In sharp contrast, drugs such as clopidogrel (Plavix) and aspirin are two exampl...

Microbe fixes nitrogen at a blistering 92 C

...ing at hydrothermal vents because vent animals had completely different nitrogen isotope ratios than non-vent deep sea animals. The work that led to FS406-22 was supported by Washington Sea Grant, based at the UW, and the NASA Astrobiology Institute. Mehta worked five years doing some 600 enrichments, with FS...

Bacteria that use radiated water as food

... The organisms we describe in this paper live in a completely different world than the one we know at the surfac...keptical of subsurface bacterial communities being completely disconnected from surface ecologies fed by the sun's light. Pratt, Princeton University geomicrobi...

Critical hearing gene helps send auditory messages to brain

...ng animal, the researchers studied "knockout" mice completely lacking a functional otoferlin gene. When exposed to sounds of various frequencies, the mice showed no detectable activity in parts of the brain that normally process sound. They further found that the profoundly deaf mice suffered a complete loss ...

Malaria vaccine prompts victims' immune system to eliminate parasite from mosquitoes

...racts revealed that the antibodies were capable of completely eliminating the ookinettes. The study authors noted that Psv25H, a molecule similar to Pfs25, is found on the surface of ookinettes of another species of Plasmodium that causes malaria, Plasmodium vivax. They wrote that the conjugate technology co...

Fruit fly aggression studies have relevance to humans, animals

... of them have human counterparts. "Now we have 15 completely novel genes we can use in the future to investigate aggressive behavior," Mackay said. "Ultimately we hope to understand the basic biology of this very important trait, because the better we understand it in flies, the more we can develop logical hum...

Batfish to the rescue!

...d halved the amount of weed. In eight weeks it was completely gone and the coral was free to grow unhindered," Prof. Bellwood explains. The turnaround was due mainly to one species of batfish, Platax pinnatus, which is comparatively rare on the GBR and was thought to feed only on invertebrates. The event ...

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