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Tag: "measuring" at biology news

Color-blind method opens new doors in DNA sequencing

...e have built a highly sensitive instrument for the measuring of fluorescence, because PME gives brighter signals and collects more of that signal by eliminating the need for a prism to separate the light into colors." Metzker is also seeking to develop a chip-based imager than could be used in his overall pro...

BRCA1 causes ovarian cancer through indirect, biochemical route

... cancer or pinpoint just who is at risk, simply by measuring the chemical's levels. "The consequence of this finding," Dubeau says, "is that ovarian cancer is the result of some biochemical problem that may be correctable or preventable. That's what makes this finding so exciting." Dubeau points out that wom...

Development of portable infectious disease detector

...opment of a sensor suite capable of simultaneously measuring theconcentrations of the key chemicals that cells consume andexcrete--oxygen, glucose and lactic acid--with enough sensitivity tomonitor the health of a few thousand cells confined in a small volume.(For more detail see "New device can help defend ag...

Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers

... exchange. Using a respirometer (an instrument for measuring respiration that consists of a chamber with a flow-through air system), they monitored the moth's breathing pattern. The chamber, which housed the moth being studied, was filled first with air that had been freed of carbon dioxide. Next, a device mea...

World's largest rainforest drying experiment completes first phase

...ch tree trunks grew in diameter. Many small trees, measuring 4 to 10 inches in diameter, simply stopped growing during the end of the dry season of 2000, following the first period of rainfall exclusion, as the trees of similar size continued to grow in the "control" forest plot. The trees slow down the amount...

Affymetrix and Stratagene Announce Strategic Software Alliance

...st software makes the industry-leading methods for measuring gene expression on a genomic-scale available to an ever broadening community of life scientists." As part of the agreement, Stratagene has joined the community of Affymetrix partners developing methods for next-generation gene expression microarrays...

Molecular Motors Cooperate In Moving Cellular Cargo, Study Shows

...f a peroxisome, and the force acting upon it. "By measuring force we can determine how many molecular motors are working together," Selvin said. "This will help us further understand these marvelous little machines." ...

Polymers with copper show promise for implanted sensors

...questions, the researchers have developed a way of measuring the amount of nitrosothiols in blood samples, and they're working on a way to do the same thing in fluid under the surface of the skin. Much work remains to be done, "but the concept of using immobilized copper ions is what we're putting a lot of th...

PET/CT can identify new cancer lesions at early stage, allowing for prompt treatment

...ogic imaging for diagnosis, staging, restaging and measuring early therapy responses. CT is an X-ray test that generates a detailed view of the anatomy or structure of organs and tissues in the body. Combining PET with CT provides images showing function (PET) and anatomy (CT) and a merged or "fused" picture o...

Decoding the logic of olfaction

...imal's olfactory cortex and map neural activity by measuring the activity of a marker gene called c-Fos in individual neurons across this entire structure. "We found that a single odorant does not just stimulate one or two spots in the cortex," said Buck. "Instead it stimulates a very small subset of neurons ...

Genpathway and Baylor College of Medicine Identify New Genes in Breast Cancer

...imal's olfactory cortex and map neural activity by measuring the activity of a marker gene called c-Fos in individual neurons across this entire structure. "We found that a single odorant does not just stimulate one or two spots in the cortex," said Buck. "Instead it stimulates a very small subset of neurons ...

Measuring hormone cuts antibiotic use in half in pneumonia patients

..., Dr. Tamm and colleagues decided to study whether measuring levels of the hormone could eliminate or reduce antibiotic use in patients with bacterial pneumonia. Results of the blood test that measures procalcitonin levels can be obtained in only one hour, he said. They studied more than 300 patients with com...

Measuring Enzymes At End Of Cancer Pathway Predicts Outcome Of Tarceva, Taxol

...lantation. "Testing CDK only has been possible by measuring gene expression, but our industry collaborator has provided a way that lets us test real enzyme activity within a human tumor sample," he says. "Our hope is to be able to use this system as a molecular marker to assess whether an anti-cancer therapy ...

Doing a spin with DNA

...ds back together again. With the help of sensitive measuring devices, the researchers could measure various parameters such as the friction of the rotating DNA in a cavity of the enzyme. The research has provided new insights into the interactions between DNA and the enzyme, which are of fundamental importance...

Successful Test Of Single Molecule Switch Opens The Door To Biomolecular Electronics

...are removed and turn it back into an insulator. By measuring the connected molecule in a sulfuric acid solution...roducible measurements showing all three states by measuring the current through it as electrons were removed by another electrode, turning it from an insulator ...

Sugar beet virus mutation requires Texas touch

...viruses, as well as a combination of the two." By measuring the effect of the disease on the plant, as well as purifying the virus and quantifying how much is actually present, they can determine if resistance is expressing itself, Rush said. Breeders have good indications they may have some resistance in so...

Columbia study shows widely used artery clearing device does not help patients during heart attack

...udy also measured the size of the heart attacks by measuring the uptake of a tracer in the heart, and found that there was no difference for patients who received distal protection. According to Dr. Stone, not using distal protection devices will reduce the cost of angioplasties during heart attacks, and coul...

Life detection instrument passes key test on road to Mars

...cal test that must be done on Mars. "We feel that measuring homochirality - a prevalence of one type of handedness over another - would be absolute proof of life," said Mathies, professor of chemistry at UC Berkeley and Skelley's research advisor. "We've shown on Earth, in the most Mars-like environment avail...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

...le marine species will have growing importance for measuring impacts of climate change and, should polar caps continue receding, hypothetical new disturbances on the northern ocean such as energy exploitation, fishing and shipping. The research compares species distribution in the shelf, slope and deep sea re...

Immune system's distress signal tells bacteria when to strike back

...f a bacterial signaling molecule called C4-HSL. By measuring the amount of C4-SHL in their environment these bacteria can estimate their own numbers and density. If they feel they are sufficiently numerous, they produce two virulence factors, molecular weapons known as PA-I and Pyocyanin. PA-I causes the barr...

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Breaking Medicine News(10 mins):Health News:Living with a Disability Magazine Marks World Hepatitis Day on July 28 with New Article on Disabling Digestive Disorders 2Health News:Living with a Disability Magazine Marks World Hepatitis Day on July 28 with New Article on Disabling Digestive Disorders 3Health News:The Drama Method Pdf Review Exposes Aaron Fox's Relationship Guide – Vkool.com 2Health News:The Drama Method Pdf Review Exposes Aaron Fox's Relationship Guide – Vkool.com 3Health News:Mitul R. Patel, DDS Successfully Attacks a Major Source of Economic Destruction in the Battle Against Illiteracy and Poverty 2Health News:Mitul R. Patel, DDS Successfully Attacks a Major Source of Economic Destruction in the Battle Against Illiteracy and Poverty 3Health News:Shore Points Capital Announces Sale of Portfolio Company Loftware 2Health News:The Tainted Burger- McDonalds's Franchise Owner's Tale by Author Michael B. Potts Says McDonald's Disproportionately Markets to Minorities--Tedx Video Supports Claim 2
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