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Tag: "sections" at biology news

Neuronal 'traffic jam' marks early Alzheimer's disease

... Goldstein and his colleagues also examined brain sections taken at autopsy from humans with different stages of Alzheimer's disease. They detected the same kinds of swelling in those samples that they had seen in the mice. "This was a small, initial neuropathological study, but we believe that it is signifi...

Found: Missing sequence of the human Y chromosome

...999%, but despite this accomplishment, substantial sections ofchromosomal sequences were still missing.The Y chromosome, a sex chromosome that is specific to the human male,has posed a particular challenge to researchers attempting to decodeits sequence. It contains an extraordinary abundance of repetitiveele...

Gene therapy converts dead bone graft to new, living tissue

... whose treatment involves the replacement of large sections of bone. Cancers such as osteosarcoma, one of the ...proteins that govern its health. His team replaced sections of bones in dozens of mice, using both healthy and dead segments, then scanned the surrounding infla...

Protein Packages Found To Activate Genes; May Be What Regulates Development And Disease

...d "gene chips" that rapidly scan millions of small sections of chromosomes to detect gene activity. But the sc... clusters in mice and humans boast relatively huge sections of chromatin completely covered with tags. This was not seen before by using standard techniques, or...

First 'atlas' of key brain genes could speed research on cancer, neurological diseases

...ping mice.Using genetic probes to investigate thin sections of mouse brains, thescientists found that only 349 of the TF genes were expressed inspecific regions, and not throughout the brain, as the majority were.They inferred that these 349 genes, therefore, controlled thedevelopment of the particular areas ...

Jumping gene helps explain immune system's abilities

...e the choices aren't as tasty, immune cells select sections ofcertain genetic instructions in order to make in...cular antigen. Machinery snips outunwanted genetic sections and reconnects the leftover ones, creating aunique gene (the cellular equivalent of the diner's meal...

UCSD Discovery Shows How Embryonic Stem Cells Perform 'Quality Control' Inspections

...e the choices aren't as tasty, immune cells select sections ofcertain genetic instructions in order to make in...cular antigen. Machinery snips outunwanted genetic sections and reconnects the leftover ones, creating aunique gene (the cellular equivalent of the diner's meal...

New therapy for HIV/AIDS eliminates needles and excessive toxicity

...e the choices aren't as tasty, immune cells select sections ofcertain genetic instructions in order to make in...cular antigen. Machinery snips outunwanted genetic sections and reconnects the leftover ones, creating aunique gene (the cellular equivalent of the diner's meal...

Gene sequencing explains bioremediation 'bug'

...e the choices aren't as tasty, immune cells select sections ofcertain genetic instructions in order to make in...cular antigen. Machinery snips outunwanted genetic sections and reconnects the leftover ones, creating aunique gene (the cellular equivalent of the diner's meal...

Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation

...one of countless combinations. The rings represent sections of DNA cut out of chromosomes during the mixing and matching of genes that are chosen to build a particular receptor. Each T cell uses the resulting combination of genes to make a receptor that lets the cell recognize a specific target. When stimulat...

Protein offers way to stop microscopic parasites in their tracks

... as rhomboid proteases, which are able to clip off sections of proteins near the surface of the cell membrane. Using other rhomboid proteases as guides, Brossier identified genes for five rhomboid proteases in Toxoplasma. Scientists showed that the parasite used at least four of those genes to make active pr...

Pulsating ultrasound enhances gene therapy for tumors

...ound in deep-sea invertebrates--was visible in all sections of the tumors exposed to pulsed-HIFU. Tumors not targeted with pulsed-HIFU showed negligible signs of the gene. An analysis showed reporter gene levels to be nine times higher in tumors treated with pulsed-HIFU compared with tumors left unexposed. ...

Silence the gene, save the cell: RNA interference as promising therapy for ALS

...roduced in the cell, where they bind with matching sections of messenger RNA. The cell identifies the resulting messenger RNA strand as faulty and chops it up. As a result, the genetic blueprint isn't delivered and the protein never gets made. "Gene silencing is an example of using "molecular scissors" at it...

Small species back-up giant marsupial climate change extinction claim

... 45,000 years ago," says Mr Price. "Other younger sections have a mixture of both large and small species that are habitat generalists or are species found in open areas, suggesting the landscape was evolving towards open grassland. "By the latest Pleistocene species dependent on wetter conditions disappear...

A probe, not an echo

...ious frequency bands and they define the different sections of the tissue in the image," said Marmarelis. The two arrays, transmitter and receiver, are mounted on opposite sides of a drum that spins as it rises around the object (which is suspended in water), creating a stack of tomographic image slices whic...

High-powered gene profiles provide clues to genes involved in common form of lung cancer

...ology that makes it possible to zoom in on smaller sections of cell chromosomes than ever before, researchers at Dana-Farber Cancer Institute have identified nearly 100 chromosome regions where genes are either over-copied or missing in non-small cell lung cancer. The findings provide new clues about the loca...

Big differences in duplicated DNA distinguish chimp and human genomes

.... Among the human-only duplications, some of those sections of the genome are implicated in human developmental disorders such as spinal muscular atrophy and Prader-Willi syndrome. Parts of those duplicated segments have only single copies in the chimp genome, and it is possible that the chimpanzee is therefo...

Microscopic brain imaging in the palm of your hand

...led images of the blood vessels in the hippocampus sections of the brains of live mice. The mice were injected with a fluorescein dye ?an FDA-approved contrast agent that is most commonly used for retinal exams in humans. The fluorescein labeled the blood plasma so the vessels in the brain could be clearly se...

3D Atlas Will Help Navigate The Spinal Cord

...icular protein which can be demonstrated in tissue sections using a technique called immunohistochemistry that involves the use of specific antibodies. The often distinct distribution of these chemicals in the rat spinal cord is like a "signature" for one type of nerve cell and its processes. Because most of...

Research suggests fitness of Florida panthers improved by limited breeding with Texas animals

...th radio collars were released in each of the four sections of South Florida where Florida panthers were known...e been moving successfully south and east into new sections of the Everglades National Park and Big Cypress National Preserve, he said. Pimm, whose research g...

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(Date:7/31/2014)... meta-analyses involving tree nuts (almonds, Brazil nuts, cashews, hazelnuts, ... published in the online publications, British Medical Journal ... (ii). The BMJ Open article looked ... (MetS) criteria and showed that tree nut consumption resulted ... glucose. The PLOS ONE article focused on ...
(Date:7/30/2014)... Queen in Lewis Carroll,s Through the Looking Glass, ... University of Singapore improved a 35-year-old ecology model ... to millions of years. , The new model, ... the "Red Queen Effect," an evolutionary hypothesis introduced ... suggests that organisms must constantly increase their fitness ...
(Date:7/30/2014)... of climate change on the world,s animal and ... according to a new paper by a research ... Queensland, and other organizations. The authors claim that ... point when it comes to climate change. ... focus on the "direct" threats of changing temperatures ...
Breaking Biology News(10 mins):New international tree nut council study looks at nuts, diabetes and metabolic syndrome 2Classic Lewis Carroll character inspires new ecological model 2Classic Lewis Carroll character inspires new ecological model 3Conservation scientists asking wrong questions on climate change impacts on wildlife 2
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