Tag: "varied" at biology news

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...cids present as Neu5Gc in the embryonic stem cells varied from 2.5 to 10.5 percent. In human embryonic stem cells that had been allowed to differentiate into embryoid bodies (EB), which is the first step in preparing them for potential use in humans, the percentage of total sialic acids present still ranged...

Experimental radar provides 3-D forest view

...ound Kalimantan on the island of Borneo. The sites varied in character from pristine rainforest to coastal mangroves and oil palm and rubber plantations. They were also measured in detail on the ground to provide 'ground truth' for the radar results, around 200 Gigabytes of raw data having been gathered dur...

New study in JAMA details trends in diagnosis, treatment of brain tumors

...gnant brain tumors shows that patterns of care are varied and there is a need for new, detailed clinical guidelines for management of brain tumors. The study is published in the Feb. 2, 2005 issue of the Journal of the American Medical Association (JAMA) found on the web at www.jama.ama-assn.org . "W...

Open microfluidic and nanofluidic systems

...tion. The width and depth of these channels can be varied between a hundred nanometer and a couple of micrometer. At first sight, it seems rather obvious to use such surface channels as microcompartments. However, if one actually tries to fill these channels with a certain liquid, one observes that the liqu...

Scientists will discuss remarkable advances in whale research at the annual meeting of AAAS

... that the DNA sequence in a gene called ''D loop'' varied widely among individual whales. ''A small population tends to weed out all of its genetic differences through inbreeding,'' Palumbi noted. ''A large population should have a lot more genetic variation. Our study shows that humpback whales today actua...

The secret lives of whales

...ng to the need for resumed whaling. Yet the whales varied DNA reveals a different story, a past with an ocean teeming with whales. It also shows a steadily growing population, with drastic declines only showing up in recent history. Whales have shown remarkable resilience to cataclysmic events - until the l...

Growth in the sea comes down to a struggle for iron

... chemical oceanography and has worked in places as varied as Rhode Island's Narragansett Bay and Antarctica. Joining him on the July voyage were two UMaine graduate students -- Eric Roy and Lisa Pickell -- and postdoctoral researcher Jennifer Boehme. UMaine scientist Mary Jane Perry collaborates on the proj...

Studies expand understanding of X chromosome

...ers include red-green color blindness, hemophilia, varied forms of mental retardation and Duchenne muscular dystrophy. "From studying such genes, we can get remarkable insight into disease processes. But the importance of the sequence goes beyond individual genes. We have also gained a deep insight into the...

A regulatory network analysis of phenotypic plasticity in yeast

...ross a range of stressful environments. Some genes varied enormously in their expression levels from one environment to the next, while others were relatively constant. That is, some genes were more plastic than others. Promislow has now discovered that the more regulators a gene has, the more plastic the g...

Research warns against sleeping in contact lenses

...eased when lenses were slept in and that this risk varied according to the type of lens worn. "Those who choose to sleep in lenses should be advised to wear silicone hydrogel lenses, which carry a five times decreased risk of severe keratitis for extended wear compared with hydrogel lenses." About 3 million...

Components in grapes inhibit enzyme key to proliferation of cancer cells

...he proanthocyanidin and anthocyanin classes of the varied flavonoid family. They worked more effectively against the enzyme than do the previously identified flavonoids quercetin and resveratrol. Alone, the individual compenents had less effect on the enzyme. "We definitely had very potent activity against ...

Europe faces brain drain and declining patient care unless cancer research funding is doubled

...s a percentage of GDP. Spending on cancer research varied widely across Europe in 2002/2003. The UK spent the most (388 million) while Malta spent nothing. The European Commission contributed around 90 million. When the Survey analysed the spending as a proportion of GDP, the UK spent the most (0.0267%), fo...

Searching the depths of the straits of Florida for disease cures

...ity in Boca Raton, found incredible diversity that varied dramatically along its length. Prior to that cruise the steep rocky walls had only been seen from submersibles by geologists in 1970 and 1995. Dives during the Straits of Florida expedition will be in new areas not yet explored. Besides looking for ...

Ancient enzyme guides healthy eating in mammals

...rtant in all mammals, including humans, that eat a varied diet comprised of meat and vegetables, the researchers said. David Ron, of the New York University School of Medicine, and his colleagues found in mice that an enzyme known as GCN2 kinase sets off a cascade of events that relays information to the br...

A kiss that binds

...erstanding how loss of this protein results in the varied and complex phenotypes of Fragile X syndrome. In most Fragile X patients, loss of FMRP is due to silencing of FMR1 resulting from the unusual amplification of a CGG repeat (over 200 copies in affected patients versus less than 60 copies in unaffected...

A human parasite with a streamlined mitochondrion

...verse carriers are needed to import and export the varied chemicals required, or produced, by our complex mitochondria. The presence of a single carrier in the Entamoeba mitosome means that it must be able to do far fewer jobs than our own mitochondria. Further experiments performed by the team reveal that ...

Variation in immune response gene causes age-related macular degeneration when triggered

... gene in about one third of the population provide varied degrees of protection from acquiring AMD. The Iowa team also examined a large collection of donated eye samples and observed that the activation of the immune system results in the formation of drusen - pockets of inflammation that are the precursors...

Side effects

...mes are like locks made by the same locksmith, but varied slightly to open with different keys. The cancer drug fits AChE like a key that slides in part way, but won't turn," says Sussman. "As far as we know, this is the first time the side effect of a drug has been observed at the atomic level." Drug desig...

Past AACR president Susan B. Horwitz elected to National Academy of Sciences

... research involving scientists and clinicians with varied expertise in the conquest of cancer." A member of the AACR since 1973, Dr. Horwitz has served on numerous program and special conference committees, and is a former recipient of the AACR-Bruce F. Cain Memorial Award for Preclinical Research. Other A...

Reservoirs may accelerate the spread of invasive aquatic species, researchers say

... in a region and that reservoirs typically replace varied stream habitats with habitats more similar to each other. Compared to natural lakes, reservoirs are usually shallower, more connected to other water bodies, and more laden with suspended and dissolved solids; they also have a higher and more variable...

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(Date:4/22/2014)... research projects study the effects of temperature and precipitation ... However, an important component of climate research, the UV-B ... in collaboration with their colleagues from the Universities in ... from the U.S. NASA space agency in such a ... influence of UV-B radiation on organisms. , The basic ...
(Date:4/22/2014)... another way of asking him or her to behave ... cells of the immune system tend to misbehave with ... these cells are known to misbehave similarly during spaceflight, ... cells to better understand how our immune systems change ... on Aging, part of the National Institutes of Health, ...
(Date:4/22/2014)... Recent projects in two Minnesota cities demonstrate how ... projects continue a ten year program in New ... plans tailored to local conditions. , "Our goal ... protect themselves," said program co-leader Latham Stack, of ... have already worsened. We help communities move beyond ...
Breaking Biology News(10 mins):UV-radiation data to help ecological research 2For an immune cell, microgravity mimics aging 2For an immune cell, microgravity mimics aging 3For an immune cell, microgravity mimics aging 4For an immune cell, microgravity mimics aging 5Minnesota projects offer hope and practical help to communities facing more extreme storms 2
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