receives 2 2

Tag: "receives" at biology news

New neurons take baby steps in the adult brain

... is required as a first step. Next, the new neuron receives specific connections that communicate using GABA, ...he third and final step occurs when the new neuron receives connections that communicate via another chemical, the critical excitatory messenger glutamate. In ...

The brain is broadly wired for reproduction

...rocesses odors, the vomeronasal (accessory) system receives signals -- triggered by pheromones -- from the vomeronasal organ (VNO) in the nasal septum. However, the systems are not entirely parallel. Buck and her colleagues have shown that the VNO can detect some odorants. And conversely, there is evidence th...

Sooner is better with cochlear implants, Stanford scientist shows

...ggesting that the earlier a hearing-impaired child receives a cochlear implant, the better. "I see this as a fascinating experiment that reveals the tremendous capacity for plasticity in the developing brain," said Eric Knudsen, PhD, the paper's senior author and the Edward C. and Amy H. Sewall Professor at ...

New nanosensor uses quantum dots to detect DNA

...tached to one is a Cy5 molecule that glows when it receives energy. Attached to the second probe is a molecule called biotin. Biotin sticks to yet another molecule called streptavidin, which coats the surface of the quantum dot. To create their nanosensor, the researchers mixed the two DNA probes, plus a qua...

Carnegie Mellon develops non-invasive technique to detect transplant rejection at cellular level

...del to study organ rejection. In this model, a rat receives a second functional heart, which is grafted into its abdomen. The rat's native heart functions normally. In this way, the researchers can study how a transplanted heart changes through sequential stages of rejection while the rat stays healthy. This ...

Infection 'alarm' yields clues to immune system behavior

...vels from the surface of a cell to its nucleus, it receives critical help from a molecule called Inhibitor of KappaB Kinase, or IKK. "IKK filters and interprets the warning message," said Cheong, who is an M.D.-Ph.D. candidate in the Johns Hopkins School of Medicine. "It carefully controls the level of the im...

How nerve cells stay in shape

...nch out like the branches of a tree. The cell-body receives incoming information, and transmits it further through the axon, a long projection from the cell. Nerve cells make contact with each other at highly-specialised locations known as synapses. There, information is not only passively transmitted. Synaps...

Why nerve cells work faster than the theory allows

...o process and transmit messages. When a nerve cell receives an impulse, the voltage across the cell membrane is reversed. This "action potential" spreads out through the long appendages of the cell with high speed. At the end of the appendages it is transmitted to other cells. In 1952, Alan Lloyd Hodgkin and ...

Watching the brain switch off 'self'

...rtex is inactive. Thus, the term "losing yourself" receives here a clear neuronal correlate. This theme has a tantalizing echoing in Eastern philosophies such as Zen teachings, which emphasize the need to enter into a 'mindless,' selfless mental state to achieve a true sense of reality," they wrote. ...

Movement of chromosome in nucleus visualized

...y and moves to the interior of the nucleus when it receives an activating signal. "The movement following activation was radically different from the rapid, but short-range, diffuse movement previously observed in these nuclei," said Dr. Andrew Belmont, professor of cell and developmental biology at UIUC, p...

Evolutionary shifts in olfactory sensitivities in fruit flies

...brain area (a so-called olfactory glomerulus) that receives input from the MeHex-specific neurons is significantly increased in size in D. sechellia. The researchers' findings indicate that the relative overexpression of MeHex-specific receptor neurons in D. sechellia compared to D. melanogaster has occurred ...

Not just the birds

...all island with a large perimeter touching the sea receives more nutrients from marine ecosystems than a large island due to the differences in surface-to-area ratios. In a new study by John Maron, James Estes, Donald Croll, Eric Danner, Sarah Elmendorf, and Stacey Bucklelew, scientists have discovered that ...

Contaminants linked to sturgeon decline in Columbia river

...ments bearing the contaminants moves. The Columbia receives input from numerous sources, so any population of fish at any one site can be exposed to a myriad of substances." The OSU researchers say it is difficult to estimate the numbers of sturgeon in the Columbia, but there has been a noticeable decline in...

Weighting cancer drugs to make them hit tumors harder

...e normal blood vessels. As a result, normal tissue receives less of the drug than does the tumor. Results of the study, funded by the National Institute of Biomedical Imaging and Bioengineering, a branch of the National Institutes of Health, are published in the March 1, 2006, issue of the Journal of the Nat...

With cochlear implants, earlier use leads to better speech

...hat indicates the earlier a deaf infant or toddler receives a cochlear implant, the better his or her spoken language skills at age 3 and a half. The research was conducted by Johanna Grant Nicholas, Ph.D., research associate professor of otolaryngology at Washington University School of Medicine in St. Louis...

UC Davis researchers move biotechnology closer to replacing electronic pacemakers

... atrium, the upper right chamber of the heart that receives deoxygenated blood from the body. "We were even able to create new pacemaker regions on the left atrium," Li said. According to Li, the current study moves research beyond using animal models such as mice and rats, whose hearts can beat up to 60...

Scientific issues associated with carbon-neutral energy sources such as cellulosic ethanol

...evelop alternative sources of energy." The earth receives approximately 4,000 times more energy from the sun each year than the total projected human uses in the year 2050, Somerville commented. Green plants growing throughout the world capture the sun's (solar) energy and convert it to bio-chemical energy...

Cougar predation key to ecosystem health

...Zion Canyon, simply by their presence. That canyon receives nearly three million human visitors a year, the adjacent North Creek a stray handful of hikers. Cougars in Zion Canyon were not intentionally killed or removed, they just left due to the increased presence of humans. As findings such as...

PLoS ONE is launched by the Public Library of Science

... manuscript submissions only in August, it already receives in excess of 100 submissions each month and launches with the publication of 100 peer-reviewed research articles. The volume of articles is unprecedented for a journal launch, and is an indication of the strong support within the research community f...

Malaria vaccine prompts victims' immune system to eliminate parasite from mosquitoes

...ce, would prompt the immune system of a person who receives it to eliminate the parasite from the digestive tract of a malaria-carrying mosquito, after the mosquito has fed upon the blood of the vaccinated individual. The vaccine would not prevent or limit malarial disease in the person who received it. An...

1 2 3 4