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Tag: "account" at biology news

Understanding biases in epidemic models important when making public health predictions

... used in infection management do not realistically account for the length of time that people harbor infectio...fectious period distributions should be taken into account when making quantitative predictions for public health use." ...

When it comes to cell entry, being average has its advantages

...anck, Freund created a mathematical model that can account for this. Particle size plays a key role. According to the team's new model, cells take in viruses and other particles with a diameter of 27 to 30 nanometers more readily than ones that are larger or smaller. The faster the viruses are absorbed, the ...

Big differences in duplicated DNA distinguish chimp and human genomes

...n differences from single base-pair changes, which account for about 1.2 percent of the genome. "For all the talk of the 1.2 percent single base-pair difference and the importance of those, there's even more difference between the species due to duplication events," said Eichler. "Now we need to learn the ...

Where Bacteria Get Their Genes

...esearchers then computed family trees, taking into account the acquired genes, and matched the trees to an established reference tree. For all genes, the match was about 95 percent. This showed that the widespread mechanism of lateral gene transfer does not interfere with the traditional approach of using fa...

Depression gene may weaken mood-regulating circuit

...g the same tune and to what extent might this gene account for it?'" In this case, it turned out that the amygdala, a fear processing hub deep in the brain and the cingulate, an emotion-dampening center located near the front of the brain, were playing a duet under the baton of the depression-linked gene. ...

Map of life on Earth could be used on Mars

...genes, which are not critical for cell production, account for most lateral gene transfers between microbes. "There is a lot we're beginning to understand in terms of bacterial evolution that is still not quite clear, " Blank said. "What we're trying to resolve is the evolutionary history of the core of the...

Best research work in the area of wine growing

... be made and actions carried out while taking into account the peculiarities of each variety. In concrete, at the Congress, the group received the "Amândio Galhano Prize", awarded by the Vinos Verdes Region Viticulture Commission. The V Iberian Congress of Horticultural Science brought together researchers...

Chronic Sinus Infection Thought To Be Tissue Issue, Mayo Clinic Scientists Show It's Snot

...o take not only the tissue but also the mucus into account when trying to understand what causes chronic sinus infections and probably other airway diseases." The findings could significantly change the way chronic sinus infection is treated, according to Dr. Ponikau. "This has far-reaching implications," ...

Mice brains shrink during winter, impairing some learning and memory

... compared to the other mice, even when taking into account that their overall body mass was smaller, too. In addition, the researchers found changes in a region of the brain ?the hippocampus ?that is involved in spatial memory. Mice in short days had a proportionally smaller hippocampus, as well as changes ...

Atmosphere may cleanse itself better than previously thought

...l job with our measurements in order to accurately account for all the reactive chemicals present in the air." Francisco said he hopes the study also would encourage other refinements to atmospheric models. "Models are only as good as the information we put into them, and we must always keep a cautious per...

Ebola virus: from wildlife to dogs

...s in Ebola fever outbreaks and take this risk into account in epidemic-control measures. These animals could furthermore be used as indicators of the presence of the virus in the regions where, besides the appearance of cases of both animal and human deaths, there is no external sign as to whether or not Ebo...

While on trail of dioxin, scientists pinpoint cancer target of green tea

...d also sidestep questions such as how to take into account different types of teas and different brewing processes, or how much tea one needs to drink. "It's important to find out the source of green tea's protective effects," says Gasiewicz, professor and chair of Environmental Medicine and director of Roc...

Where bacteria get their genes

...esearchers then computed family trees, taking into account the acquired genes, and matched the trees to an established reference tree. For all genes, the match was about 95 percent. This showed that the widespread mechanism of lateral gene transfer does not interfere with the traditional approach of using fa...

Researchers make surprise discovery that some neurons can transmit three signals at once

...hese processes, but how inhibitory synapses, which account for about half of the brain's cellular connections, would gain access to these receptors has long puzzled researchers. But now, the Pittsburgh researchers believe they have solved some of the mystery. During this crucial period, immature inhibitory s...

New project aims to make large-scale lobster farms feasible

...ters valued at about $17 million are harvested and account for 11% of the spiny lobsters on the U.S. market. Overfishing of lobster has also led to ecological problems in some areas that might be relieved through successful culture and release to the wild. The main barrier to successful commercial spiny lob...

Chromosome Deletion Predicts Aggressive Neuroblastoma

... deletion of genetic material on chromosome 11 may account for a significant percentage of these high-risk neuroblastomas," said Dr. Attiyeh. It is unknown what causes the deletion of genes on chromosome 11, at a location designated chromosome 11q23. However, the loss of material at that site apparently rem...

Cooperation is key—a new way of looking at MicroRNA and how it controls gene expression

...lded far fewer targets than expected and could not account for all known microRNAs. The reason, says Han, is that scientists were trying to predict the microRNA targets using the sequence homology of the full-length microRNAs. In their Cell article, Han and his colleagues show that you don't need the full-l...

First North American Encapsulated Islet Transplant without Long-term Immune Suppression into a Patient with Type 1 Diabetes

...cells of the immune system but have been unable to account for the high levels of the gene in Scandinavia and relatively low levels in areas bordering the Mediterranean. They have also been puzzled by the fact that HIV emerged only recently and could not have played a role in raising the frequency of the mu...

Biologists discover why 10% of Europeans are safe from HIV

...cells of the immune system but have been unable to account for the high levels of the gene in Scandinavia and relatively low levels in areas bordering the Mediterranean. They have also been puzzled by the fact that HIV emerged only recently and could not have played a role in raising the frequency of the mu...

Medical whistleblowers speak out

...re risking the public's health or safety. Lenzer's account of the roundtable, in which she outlines the lesso...eled, unnoticed, all beneath the radar." Lenzer's account captures some of the ways in which industry may influence not only which drugs get approved, but als...

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