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Tag: "similar" at biology news

Traumas like Sept. 11 make brains more reactive to fear

...horror that are within a normal range -- may cause similar changes in the brain that traumas do. Victims may experience lingering symptoms (bad dreams, jumpiness, thinking about the incident and avoiding the site of the trauma), but they are not severe. However, the kinds of changes that these traumas cause ...

Brain's white matter -- More 'talkative' than once thought

...ignals produced by the neurotransmitter glutamate, similar to the signals used as the principle means of cell-to-cell communication and information processing in the gray matter. The phenomenon was unlikely, they said, because in the mouse brain, OPCs in the myelin-rich white matter are far from synapses, th...

Students invent protective pouch to enhance cell therapy

...of nylon mesh between two concentric metal stents, similar to the ones used to keep clogged blood vessels open. Once the stents are in place, microcapsules filled with helpful cells are injected into the gap between the stents, where they become trapped within the nylon mesh. Blood flowing through the vessel...

Fat screen delivers plant-derived chemical with antidiabetic effects

...chemical increases insulin sensitivity in a manner similar to, though more roundabout than, the predominant antidiabetes drugs. Rather than triggering PPARã directly, the chemical blocks a pathway that normally inhibits fat cells' production. "Harmine inhibits an inhibitor for a net positive effect on fat" t...

WHO data confirms low level of resistance to Tamiflu

...lu in 1999, the levels of resistance have remained similar to those seen in the clinical development programme. Roche and the NISN continue to maintain high vigilance to keep on top of the evolving virus. " Information gathering and results As with any antiviral medication, there is a theoretical ri...

Scientists develope a new model of artificial canine skin

...ve developed an artificial canine skin model, very similar to normal skin, which is useful for research and w...s. The model develops a morphological structure similar to that of canine skin. Additionally, the expression of the dermis and epidermis proteins follows th...

DOE JGI sets 'gold standard' for metagenomic data analysis

...earch Tool) is a method used to rapidly search for similar sequences in existing public databases. Mavrommatis said that a popular approach is to take the sequence, BLAST it against the database, and find the best hit and assume that the sequence queried belongs to the same group of organisms. Other me...

Dinosaur hearing, listening to muscle noise, quieter cubicles

..., crocodilians, and extinct dinosaurs) have highly similar structures. The researchers found a relationship between the body mass of a species and the size of a sensory structure in the inner ear known as the basilar papilla. Small, lightweight species with a short basilar membrane can hear higher frequenc...

Herpes infection may be symbiotic, help beat back some bacteria

...gest that we should look at whether humans receive similar advantages from these and other chronic infections...any aspects of Listeria infection in mice are also similar to those that occur in humans infected with tuberculsis. They found that when mice had a latent herp...

Do fruit flies have free will?

...nput, their behavior should resemble random noise, similar to a radio tuned between stations. However, the analysis showed that the temporal structure of fly behavior is very different from random noise. The researchers then tested a plethora of increasingly complex random computer models, all of which faile...

Gene thought to assist chemo may help cancer thrive

...atients into two groups: those whose profiles were similar to cancer patients who had not been treated with chemo and those whose profiles were similar to patients with benign tumors. As they continued their analysis, they found that the main diffe...

Study shows dramatic increase in Caesarean sections

...he increase in caesarean sections isn't known, but similar studies in the UK have shown that maternal request is now the fifth most common reason for performing a caesarean section." Dr Pennell said that despite improvements in surgical and anaesthetic techniques, a number of studies show that caesarean ...

A new portable biosensor detects traces of contaminants in food more quickly and cheaply

...e used to detect contaminants, while having a very similar sensitivity. The system has been tested successful...chanism to detect contaminants in a sample is very similar to that used by the immune system to identify a virus or bacteria in the body. The organism attacks ...

Left-right wiring determined by neural communication in the embryonic worm

...e we were able to look at this early period." A similar system of extensive gap junctions appears in the developing mammalian brain, but researchers have yet to figure out exactly what it does. In worms, at least, they now know that it's involved in differentiating the left and right sides. Now, Bargmann ...

Intelligent materials to regenerate bone tissue

...t and regenerate in such a way that it carries out similar functions as in its natural state. From Spain the Institute of Biomechanics of Valencia and Progénika Biopharma S.A. are also participating. In the case of substantial deterioration of the bone, it may be necessary for the implant to provide both ...

Detecting poisons in nectar is an odour-ous task for honeybees

...ny genes for taste receptors as other animals of a similar size, such as flies and mosquitoes. This prompted scientists to think that perhaps honeybees had a reduced need to detect and learn about toxins, despite the fact that some floral nectar contains toxins. Work carried out by Dr Wright and colleagues...

MIT's ocean model captures diversity of underwater forests

...served phytoplankton communities, including plants similar to prochlorococcus that are extremely abundant in the warm mid-latitude Atlantic and Pacific oceans. Chisholm said this is the first major change in the way scientists approach ocean models in many years. She believes it will serve to break down ...

Whiteflies and plant viruses can help each other to speed up biological invasion

...nge of vegetable, ornamental and field crops. Soon similar outbreaks were seen in other States within the USA and many other countries around the world. The outbreaks of the B whitefly have often been followed by pandemics of a group of plant viruses called begomoviruses on crops such as tomato and tobacco. ...

Flies don't buzz about aimlessly!

...patterns of a snowflake, a fly flight path appears similar whether viewed up close, or from a distance. The researchers also found that searching is intermittent, such that flies actively search by making tight turns, and fly straight some distance to begin searching again. Scale-free movement patterns h...

Researchers develop marker that identifies energy-producing centers in nerve cells

...istian. He says his investigators are developing a similar marker for glial cells in the brain. ...

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