Tag: "used" at biology news

Researchers unlock mysteries of toxic metals in the largest contaminated site in United States

...ed to know what holds the metal, he said. Hochella used a transmission electron microscope (TEM) to take a close look. "It takes months. You have to prepare the samples properly before you do the microscopy. But then you can magnify the material by hundreds of thousands of time. With that magnification, y...

Hurricane Ivan helps student study sinkholes

...surface water and karst aquifers." Karst is a term used for a landscape where water movement is underground because of the voids in the bedrock. Schwartz is using six sinkholes on Virginia Tech's Kentland Farm along the New River in Montgomery County to measure how water and contaminants move within a sin...

JCI table of contents November 1, 2004

.... The authors propose a similar mechanism might be used for embryonic cells. At this stage, however, no d...embryos created for in vitro fertilization are not used because they are unable to properly produce a fetus due to inherent genetic or mechanical defects. ...

Joslin Diabetes Center awards 1st Mary K. Iacocca Faculty Fellowship

...t we can develop a simple model that can be widely used to study islet cells in living animals," he said. He will also collaborate with Joslin researchers on stem cell projects and the study of vascular complications in people with diabetes. "In reviewing Dr. von Andrian's work, we see numerous ways in w...

Scientists raise concerns about second wave of 'mad cow' prion infection

...CJD-infected donor was transfused to 10 people and used to manufacture medicines. "This may not be a disease in decline, despite the low number of cases today," said Dr. Eglin. "There is much uncertainty over the number of cases predicted for the UK. Estimates of up to 25,000 total cases have been predic...

Research confirms that vCJD prions can be removed from blood

...t these results suggest that the new filter can be used to remove different strains of infectious prions, ...of vCJD and other TSEs from BloodThe study of vCJD used human red blood cell concentrates contaminated with about 108 infectious units of human vCJD from tr...

Other highlights in the November 3 JNCI

...at Mount Sinai Hospital in Toronto, and colleagues used a population-based series of more than 1,200 color...which are derived from bone marrow cells, could be used to deliver interferon beta to tumors. They suggest that mesenchymal stem cells could be an effective...

Study reveals genetic link to colon cancer

...te. The research team, led by Dr. Steven Gallinger used a population based study to determine that when on...onto. The study suggests this information to be used in the identification of potential high risk cases to see if screening and further testing of the pa...

Researchers grow sperm stem cells in laboratory cultures

...al cells to develop into sperm cells that could be used to fertilize eggs, providing a method to treat som... infertile can store their semen so that it can be used at a later date, should they wish to father children. However, this approach results in a less than...

BU chemist to map DNA's surface, uncovering details that will show how structure abets function

...rt for her work to develop or improve technologies used to determine how genetic elements, associated with what are known as promoter regions, act individually and collaboratively to regulate protein-encoding genes. Other second-round grants went to researchers at the Genome Institute of Singapore; Intr...

Growth factors confer immortality to sperm-generating stem cells

...iferate continuously. The Penn researchers then used a GFP marker gene in the cultured stem cells to identify the cells before transplanting them back into infertile mice. These mice then produced offspring that demonstrated the success of the culture system, thanks to the expression of the GFP gene t...

People cause more soil erosion than all natural processes

...y agriculture and construction, Wilkinson said. He used existing data on sedimentary rock distributions and abundances to calculate rates of natural erosion. "If you ask how fast erosion takes place over geologic time---say over the last 500 million years---on average, you get about 60 feet every million...

Stretching the supply of flu vaccine: Solution offered in new SLU research in New England Journal

...s of the skin using a tiny needle, such as what is used for a tuberculosis skin test. Administration of the vaccine in this way involves injecting a small bleb of vaccine into the skin, much like a mosquito bite or allergy skin test, using a very small needle. Belshe said the lower-dose intradermal vaccin...

Researchers discover transport molecule that allows boron into cells

...ting cell division, radioactive boron is sometimes used to treat certain brain tumors. Boron-based treatments have long been hampered by the blood-brain barrier, the network of blood vessels and tissues that feed and protect the brain, because only a small amount of the compound can cross the blood-brain ...

Scientists pioneer biotech techniques to halt infestation of history, art treasures in tropics

...dentify specific papers, woods and other materials used for various art and other purposes in past centuri...more effective preservation strategies. UNU-BIOLAC used DNA sequence technology, for example, to identify insects and bacteria eroding three wood types, inc...

U-M researcher examines the cell's housekeeping habits

...aid. "If you could turn it on at will, it could be used as a therapy," he said. Autophagy probably works both to promote and prevent cancer. Its works as a tumor suppressor when it limits cell size and removes damaged machinery in the cell that could generate free radicals or create genetic mutations. Bu...

Crucial evolutionary link points to origins of modern cells

..., such as X-ray crystallography, cannot readily be used to solve the three-dimensional structure of this large molecular assembly in its entirety. For the PLoS Biology paper, Rout and colleagues focused on a group of seven proteins that form the Nup84 complex in the yeast NPC. NPCs are uniformly lo...

Cell enzyme may help suppress cancer development

...optosis In addition, when the researchers used a chemical to remove the methylation in a cancer-cell line, it slowed the growth of the cells, again suggesting that the presence of the PTPRO gene and its enzyme slowed the cancer process. Taken together, the evidence strongly suggests tha...

Tiny paddle oscillator senses the mass of a virus

...sion of earlier work in which similar devices were used to detect the mass of a single bacterium, is repor...es in the neighborhood of 10 megaHertz. The virus used in the experiment weighs about 1.5 femtograms. (A picogram is 1/1,000,000,000,000th of a gram, and a...

Link between immune protein and longer survival in melanoma patients identified

...We are quickly retargeting vaccines at U.Va. to be used in patients, taking advantage of our observations," Mullins said. Last year, Dr. Craig Slingluff, professor of surgery at U.Va. and director of the HITC, reported that using molecules called peptides to treat melanoma resulted in an immune ...

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(Date:4/17/2014)... If a restaurant ... he can expect his premises to be trashed. Warnings like ... is enough to make restaurant owners pay up. Similarly, mafia-like ... in other birds, nests. If the host birds throw the ... destroying the entire nest. Consequently, it is beneficial for hosts ...
(Date:4/17/2014)... IPCC meeting painted a stark warning on the possible ... a greenhouse effect 32 times that of carbon dioxide. ... humic substances act as fully regenerable electron acceptors which ... in wetlands instead of being released to the atmosphere. ... disrupted it may enter into a vicious cycle to ...
(Date:4/17/2014)... wild animals and plant life, but there,s an invisible ... in the soil, decomposing organic matter and releasing carbon ... fungi play in ecological systems, their identities have only ... generated a genetic map of more than 10,000 species ... this week in the Proceedings of the National ...
Breaking Biology News(10 mins):Fear of the cuckoo mafia 2Fear of the cuckoo mafia 3Methane climate change risk suggested by proof of redox cycling of humic substances 2Stanford biologists help solve fungal mysteries 2Stanford biologists help solve fungal mysteries 3
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