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Tag: "plausible" at biology news

New Insights Into HIV Immunity Suggest Alternative Approach to Vaccines

...t kill most HIV strains ?are made. This provides a plausible explanation for why broadly protective antibodies have not been made in response to currently tested HIV vaccines," said Barton Haynes, M.D., lead author of the study and director of the Human Vaccine Institute at Duke University Medical Center. The...

HIV vaccine trial breaks ground for future research

...nd the non-white groups. The authors suggested two plausible explanations, one for each group. Those with high-risk behavior may have been exposed frequently to HIV and a primed immune response, probably cellular or humoral, could have worked with the vaccine and caused a greater ability to resist the virus. F...

Molecular fossils uncover link between viruses and the immune system

...ins of immune system share the same structure. One plausible explanation may be that viral building blocks served as precursors for the evolutionary more recent immune system of animals. These results are an outcome of recent advances in structural biology, a new discipline integrating applied physics, bioche...

UN: World in big ecological mess

...s a barrier to achieving the MDGs. In all the four plausible futures explored, scientists project progress in eliminating hunger, but at far slower rates than needed to halve the scourge by 2015. Changes in ecosystems such as deforestation influence the abundance of human pathogens such as malaria and cholera,...

Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

...improvement in cycle endurance capacity, but it is plausible that a training-induced increase in mitochondrial potential, as measured by CS maximal activity, improved respiratory control sensitivity during exercise as classically proposed (by J Holloszy and E. Coyle)?We hope that the present observations will ...

Change in gene may be underlying molecular defect in some colorectal cancers

...er. "Because a loss of MGMT protein function is a plausible predisposing factor for cancer through the increased occurrence of mutations? our data indicate that MGMT promoter methylation may qualify as a marker of the field defect in colorectal cancer," the authors write. In addition, "given the high lifetime...

New study finds how cells with damaged DNA alert the immune system

...but given what we have shown here, it is certainly plausible that it contributes to the expression of the NKG2D ligand," said Raulet. "It may also be that the Rae1 ligand helps trigger T cell responses that contribute to long term specific immunity. It's certainly an area of research that warrants more study."...

Renewed hope for Parkinson's patients

...but given what we have shown here, it is certainly plausible that it contributes to the expression of the NKG2D ligand," said Raulet. "It may also be that the Rae1 ligand helps trigger T cell responses that contribute to long term specific immunity. It's certainly an area of research that warrants more study."...

'Banana-jawed' fossil mammal linked to rare sound-producing skill

... down the possibilities," he said. "Among the most plausible explanations is that the hollow jaw was a sound-producing device." The animals, he added, may have used the chamber to produce sounds as part of their courtship or mating displays. According to DeBlieux, help in refining explanations behind this mam...

Pleasing plant shapes explained by new computer model

... grow into recognizable shapes. In the article "A plausible model of phyllotaxis" published in this week's edition of the Proceedings of the National Academy of Sciences, University of Calgary PhD student Richard Smith and Computer Science professor Dr. Przemyslaw Prusinkiewicz, together with their collaborat...

Diverse tropical forests defy metabolic ecology models

...sites in the tree size distributions, so it seemed plausible that there might be a general underlying explanation." "Specifically, metabolic energy proposes a rule that total tree abundances scale as the -2 power of diameter, and we were hopeful that it would apply. But we tested that prediction on data from ...

The Amazon in 2050: Implementing the law could save a million square kilometers of rainforest

... rivers, fauna, and climate, providing glimpses of plausible futures for this region. A study of deforestation responses to different policies will be published in the March 23, 2006, issue of Nature. It shows that simply implementing existing laws and proposed protected areas would spare the Amazon one milli...

Parts of the Caribbean and Central America are likely to have less summer rain

... unrelated to global warming," Neelin said. "It is plausible that the decrease is due to global warming, but there is not yet a 'smoking gun' that shows that to be the case." Co-authors on the PNAS article are Matthias Münnich, a UCLA researcher in atmospheric and oceanic sciences; Hui Su, a former UCLA resea...

Stanford snake venom study shows that certain cells may eliminate poison

... overreact when stimulated by allergens, it seemed plausible that introducing venom into the body would trigger a similar response. But Galli and Martin Metz, MD, a postdoctoral scholar in pathology and first author of the study, have shown that when mast cells respond to selected venoms, they unleash proteins...

Exxon Valdez oil found in tidal feeding grounds of ducks, sea otters

...f the journal. "This study shows that it is very plausible that exposure to Exxon Valdez oil is having a material impact on many shore-dwelling animals and is contributing to their slow recovery in some parts of Prince William Sound," Short says. "Sea otters, for instance, have yet to re-inhabit Herring Bay,...

Small molecule interactions were central to the origin of life

...endously improbable accident," presenting the more plausible idea that life began within a mixture of simple or...-regulated metabolic network. "If we wish a more plausible origin of life, then we must work with the assumption that life began, somehow, among one of the mix...

Scientists tie several cancers to common 'oncogene engine'

...unrelated cancers," Fisher said. "Therefore, it is plausible that common therapeutic strategies might be applied to the tumors as well." The newly grouped cancers ?melanoma, clear cell sarcoma, alveolar soft part sarcoma, and pediatric renal carcinoma ?are often lethal if surgery cannot completely remove them....

No-mow grass may be coming to your yard soon

...that vision of suburban bliss -- and more -- seems plausible as scientists have mapped a critical hormone signaling pathway that regulates the stature of plants. In addition to lawns that rarely require mowing, the finding could also enable the development of sturdier, more fruitful crop plants such as rice, w...

USC team reveals structure of APOBEC family protein

... this non-canonical, butterfly shape provides new, plausible explanations of an immune deficiency disease at the molecular level." With the Apo2 structure in hand, the team was able to deduce what likely goes wrong in patients with the rare, serious immune disorder hyper-IgM immunodeficiency syndrome type 2...

Dragonfly's metabolic disease provides clues about human obesity

...ho suffer from obesity," said Schilder. "It seems plausible that disturbance in the microbial community in humans might trigger these inflammatory responses." There are some other clues indicating that this may be an important question. "What we're finding in insects is that they become obese when parasit...

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