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Tag: "exists" at biology news

New findings challenge established views on human genome

...human genome – 1.5 percent to 2 percent. Evidence exists that other parts of the genome also have important functions. However, until now, most studies have concentrated on functional elements associated with specific genes and have not provided insights about functional elements throughout the genome...

Researchers discover 'acquired' DNA key to certain bacterial infection

...culosis, which causes Johne’s disease. M. avium exists in the environment and is thought to infect humans when the infected environmental hosts – amoebas – are inhaled or swallowed. Incidence of M. avium as a cause of syndromes may be decreasing because of changes in treatment for HIV-infected patien...

Modified mushrooms may yield human drugs

...lase for biofuels. "Right now medical treatment exists for about 500 diseases and genetic disorders, but thanks to the human genome project, before long, new drugs will be available for thousands of other diseases," Dr. Romaine said. "We need a new way of mass-producing protein-based drugs, which is econ...

How to steer a moving cell

...st and most comprehensive catalog of proteins that exists to date, according to Yingchun Wang, a post-graduate researcher in the Klemke lab. ...

DNA repair proteins monitored at double-strand break

...ries of signals linked to DNA repair. Inactive ATM exists as a pair of these molecules linked together. Kastan previously reported in the journal Nature how the inactive ATM molecules separate from each other in response to a double-strand break ( http://www.stjude.org/media/0,2561,453_5484_3126,00.html ). ...

Scripps research study shows humans and plants share common regulatory pathway

... said, will focus on the extensive literature that exists describing the R protein dependent immunity in plants to better understand human NLR pathways, especially those dependent on Nod1. ...

Penn study on olfactory nerve cells shows why we smell better when we sniff

...echanosensitivity of the olfactory sensory neurons exists in all mammals, even those like humans, without the septal organ. The mechanosensitivity of our olfactory neurons has two possible functions, suggest the investigators. The first is that it increases our ability to smell, enhancing the detection o...

Scientists discover how body fights to control spread of cancer

...ndary tumours, is attacked by a small protein that exists in the blood. In diseases such as breast, lung and colorectal cancer, infected cells lose growth control and eventually form tumours at these sites. If caught early these tumours can be effectively removed surgically. However, when the cancer cel...

Yale biologists 'trick' viruses into extinction

...man viruses," said Turner. "A similar idea already exists in agriculture, where farmers use non-harvested 'trap crops' to lure insect pests. Because the pests prefer the taste of the trap crops, only these plants need to be sprayed, reducing the amount of pesticide use." Turner believes that similar tri...

Stability of mRNA/DNA and DNA/DNA duplexes modulates mRNA transcription

... and introns. In contrast, an inverse relationship exists between mRNA levels and stability of the region near 3?end of genes. mRNA levels increase with decreasing thermodynamic stability of this region. "The observed correlations are impressive, given that several other factors like promoter effectiveness,...

Scientists find potential 'off-switch' for HIV virus

...r in a strand of HIV's DNA where a genetic circuit exists -- not an electrical circuit, but a set of chemical reactions that runs in a loop. First, one of HIV's genes creates the Tat protein, which is part of the chemical signal for the virus to begin replicating. An important player to complete the signal ...

Stem cell transplants explored at Stanford as a possible treatment for hearing loss

...use it means the genetic program for regeneration exists somewhere in the vertebrate family," Heller said. "We know there is an unknown signal to regenerate that we could use, but we first have to find it." The idea of using drug therapy to cure deafness has been at the back of Heller's mind since he...

Birth rate, competition are major players in hominid extinctions

...od and water in the late Pleistocene. No evidence exists that Neandertal could store either. Both Neandertal and modern humans suffered from the primate curses of single births widely spaced. For Neandertal, cultural adaptation was not sufficient to overcome and compete with modern humans, just as Para...

Neural bottleneck found that thwarts multi-tasking

...hers have long thought that a central "bottleneck" exists in the brain that prevents us from doing two things at once. Dux and Marois are the first to identify the regions of the brain responsible for this bottleneck, by examining patterns of neural activity over time. Their results were published in the De...

Bacteria from patient's dental plaque causes ventilator-associated pneumonia

...a. "Our study shows that a strong relationship exists between oral and respiratory pathogens in patients with ventilator-associated pneumonia," said Paul Heo, D.D.S., a doctoral student in the UB dental school’s Department of Oral Biology and first author on the study. "We are saying that if the p...

Engineering the heart piece by piece

...e’re presenting the current state of the art as it exists in our lab and others, and pointing out both potential applications and hurdles that remain.? The paper presents a model for collaborative research between engineers, clinicians and biologists for successful cardiovascular tissue engineering rese...

Cancer scientists create 'human' leukemia process to map how disease begins, progresses

...ed mainly on human cells where the disease already exists or by studying leukemia created in mouse cells. This study flipped it around to focus on asking which are the normal cells within which the disease arises and then how it evolves and progresses, all within the context of human cells. "So what we...

HIV dementia alarmingly high in Africa

...ntia, but this study sends a clear message that it exists in high proportions in sub-Saharan Africa and is an under-recognized condition that needs to be studied and treated," Sacktor says. Of the estimated 40 million adults and children worldwide who are living with HIV infection, an estimated 27 millio...

Stem cells engage in dialogue with the cells that regulate their futures

...oked at the possibility that two-way communication exists between stem cells and niche cells," said UW stem-cell niche researcher Hannele Ruohola-Baker, professor of biochemistry and a member of the UW Institute for Stem Cell and Regenerative Medicine. "Demonstrating that stem cells can contribute to niche ...

Edible coatings will be the packaging of the future

...ite the advantages presented by the experts, there exists a number of obstacles to the full development of this alternative system. The main one is that of cost. As edible coatings are still in the research stage, enterprises do not have the technology needed to apply the system. For the moment, its current...

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