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Tag: "same" at biology news

Why doesn't the immune system attack the small intestine?

... For years, scientists have wondered whether the same mechanism is at work in tissues that come in regul...s dendritic cells are, the stromal cells serve the same purpose: exhibiting normal-cell antigens to the immune system. "Our study points to a previously u...

Grape expectations for healthier wine

...event allergies and boost healthy compounds at the same time, reports Jennifer Rohn in Chemistry & Industry, the magazine of the SCI. The same technique could be used in the wine-making process to produce healthier wines without the added sulp...

MU researcher placing eye implants in cats to help humans see

... in size and construction, so surgeons can use the same techniques and equipment. Cats also share many of the same eye diseases with humans. The Abyssinian cats that Narfstrom is working with typically start to lose...

Vasectomy may put men at risk for type of dementia

...entia have a higher rate of vasectomy than men the same age who are cognitively normal. The dementia is Primary Progressive Aphasia (PPA), a neurological disease in which people have trouble recalling and understanding words. In PPA, people lose the ability to express themselves and understand speech. It...

Novel antigen-cloning technique may boost efforts to develop a melanoma vaccine

... Both the new and the old methods begin with the same steps. In order to identify and clone an antigen, ...riophages that are incubated with B cells from the same patient from whom the T cells were derived. Because B cells are antigen-presenting cells, once they ...

Wheat can fatally starve insect predators

...appens then even the weak, avirulent larvae on the same leaf have a chance to survive. The researchers discovered that Hessian fly larvae reprogramming of resistant plant cells only occurs at sites where the insects attack. The study also revealed that increased numbers of larvae on a plant caused...

Researcher to study astronaut bone loss for space biology agency

... immobilized patients experience bone loss for the same reason astronauts do: their skeletons have not borne any weight. "This makes their rehabilitation risky, because, like astronauts who have returned to earth, they are predisposed to fractures." Long's research project will focus on the relationshi...

Scientists discover stage at which an embryonic cell is fated to become a stem cell

...h overturn the long-held belief that cells are the same until the fourth cleavage (division) of the embryo, are reported in today's edition of Nature. After fertilisation, the cells of the embryo at first undergo equal, symmetrical divisions and unequal, asymmetrical ones that direct smaller daughter ce...

Ancient amphibians evolved a bite before migrating to dry land

... fish Polypterus as it fed. They then analyzed the same cranial junctions in several fossils -- the early amphibian Acanthostega, its fishy ancestor Eusthenopteron, and the extinct terrestrial amphibian Phonerpeton -- to determine how these bones may have moved relative to each other during feeding. By an...

New findings blow a decade of assumptions out of the water

... furnace turns on. But if the thermostat is in the same room as the window, the furnace will turn on and even out the temperature much faster. In his research Deutsch used a novel analysis of surface nutrients in the world's oceans that relied on several decades of existing large-scale data on nitrogen...

Ebola outbreaks killing thousands of gorillas and chimpanzees

...s many as four different gorilla groups fed in the same fruit tree on a single day. Thus, infective body f...anzees and gorillas also fed simultaneously in the same fruit tree at least once every seven days. The study also provided the first evidence that goril...

Destructive enzyme shows a benevolent side

... found, however, that under stress conditions, the same enzyme ?while attached to the mRNA ?helps form temporary shelters within the cell called stress granules. There, the mRNA can be protected so that production of the protein can quickly resume whenever the stress ends, perhaps insuring that the cell s...

Migration played key role in HIV spread in South Africa

...posure to marijuana smoke is linked to many of the same health problems as tobacco smoke, such as increased respiratory symptoms like cough, phlegm and wheeze, according to a new study by researchers at Yale School of Medicine. Marijuana is the most widely used illicit drug in the United States, and abu...

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

...he level of RNA expression. It is amazing that the same nucleotide sequence can simultaneously encode its respective protein and modulate its level of expression." says Stoynov. The mechanism of how DNA/DNA and mRNA/DNA duplex stability influences mRNA level remains unclear. The authors propose two mode...

Long-term marijuana smoking leads to respiratory complaints

...posure to marijuana smoke is linked to many of the same health problems as tobacco smoke, such as increased respiratory symptoms like cough, phlegm and wheeze, according to a new study by researchers at Yale School of Medicine. Marijuana is the most widely used illicit drug in the United States, and abu...

Scientists find potential 'off-switch' for HIV virus

...owave," Weinberger said. "They were exposed to the same heat as the others but did not pop. We wanted to know why about one in a million HIV particles didn't 'pop' immediately like all the rest did." Weinberger and Shenk found the answer in a strand of HIV's DNA where a genetic circuit exists -- not an...

Smoking ban dramatically reduces air pollution in Irish pubs

...ed less. In an editorial on the research in the same issue of the journal, Fiona Godfrey, B.A., L.L.M. (Master of Laws), European Union Policy Advisor at the European Respiratory Society in Brussels, wrote: "The article by Drs. Clancy and colleagues adds to the evidence from other studies that what ...

Is there a pilot in the insect?

...orrect their flight and avoid crashes. Could these same neurons be used in a sort of "automatic pilot"? This is what Nicolas Franceschini, Franck Ruffier and Julien Serres have just shown. These biorobotics specialists from the Movement and Perception Laboratory (CNRS/Université de la Méditerranée) in Mar...

Using brain scans, researchers find evidence for a two-stage model of human perceptual learning

...stigators finally asked subjects to categorize the same car images shown in the other scans. This time, two areas of the brain, the now familiar area in lateral occipital cortex as well as an area in lateral prefrontal cortex, were found to be active when processing the images. "The lateral prefrontal cor...

Study to explore using magnets to correct 'sunken chest'

...the most common congenital chest deformity, in the same way that orthodontic braces gradually realign teet...ease or decrease the pull on the breastbone in the same way that orthodontic braces are loosened or tightened. If successful, the 3MP could revolutionize...

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