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No longer a gray area: Our hair bleaches itself as we grow older

Wash away your gray? Maybe. A team of European scientists have finally solved a mystery that has perplexed humans throughout the ages: why we turn gray. Despite the notion that gray hair is a sign of wisdom, these researchers show in a research report published online in The FASEB Journal ( htt...

Unusual microbial ropes grow slowly in cave lake

Deep inside the Frasassi cave system in Italy and more than 1,600 feet below the Earth's surface, divers found filamentous ropes of microbes growing in the cold water, according to a team of Penn State researchers. "Sulfur caves are a microbiology paradise. Many different types of organisms live...

Plants grow bigger and more vigorously through changes in their internal clocks

AUSTIN, TexasHybrid plants, like corn, grow bigger and better than their parents because many of their genes for photosynthesis and starch metabolism are more active during the day, report researchers from The University of Texas at Austin in a new study published in the journal Nature . Their...

Heart valves that grow with the patient

When German President Horst Khler awards the German Future Prize for 2008 on 3 December in Berlin, researchers and research projects funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) will once again be the focus of attention. Professor Axel Haverich, a heart surgeon a...

Children's gardening programs grow environmental stewards

COLLEGE STATION, TX - A new generation has come of age since the first celebration of Earth Day in 1970. For this and future generations, environmental awareness is an important and burgeoning point of reference. Today's urban children live in environments that offer little chance for direct co...

Compound that helps rice grow reduces nerve, vascular damage from diabetes

You may want to soak your brown rice. Researchers have found that a compound that helps rice seed grow, springs back into action when brown rice is placed in water overnight before cooking, significantly reducing the nerve and vascular damage that often result from diabetes. "You have to let...

Will kids eat vegetables if they grow them?

Each night at dinner tables across Australia, frustrated parents say to their children: "Eat your vegetables!" The Hunter Medical Research Institute (HMRI) has been awarded more than $41,000 by Coles for an Australian first study which may provide solutions to this age-old parent-child power st...

New high fiber barley licensed to grow

"The recent signing of a license agreement between the CSIRO/Australian Capital Ventures Limited joint venture and Austgrains Pty Ltd has paved the way for large scale commercial crops of BARLEYmax unique grain developed by CSIRO using conventional plant breeding techniques," says the Director o...

Wisconsin researchers describe how digits grow

MADISON - Researchers at the University of Wisconsin School of Medicine and Public Health (SMPH) are wagging a finger at currently held notions about the way digits are formed. Studying the embryonic chick foot, the developmental biologists have come up with a model that explains how digits gro...

Scientific evidence supporting evolution continues to grow

WASHINGTON -- The National Academy of Sciences (NAS) and Institute of Medicine (IOM) today released SCIENCE, EVOLUTION, AND CREATIONISM, a book designed to give the public a comprehensive and up-to-date picture of the current scientific understanding of evolution and its importance in the science ...

Newborn brains grow vision and movement regions first

The regions of the brain that control vision and other sensory information grow dramatically in the first few months following birth, while the area that controls abstract thought experiences very little growth during the same period, University of North Carolina at Chapel Hill researchers have fou...

Some caterpillers just don't want to grow up

For many years, ecologists from the Centre of Environment and Hydrology (CEH) have investigated the ecology of Maculinea rebeli, a Lycaenid butterfly whose caterpillars live as parasites inside colonies of Myrmica ants, where they feed on regurgitations from the nurse ants. One of the peculiar feat...

How does a zebrafish grow a new tail?

If a zebrafish loses a chunk of its tail fin, it'll grow back within a week. Like lizards, newts, and frogs, a zebrafish can replace surprisingly complex body parts. A tail fin, for example, has many different types of cells and is a very intricate structure. It is the fish version of an arm or leg...

Proteins spur diabetic mice models to grow blood vessels, nerves

University of Utah researchers have taken a potentially powerful new therapy for treating diabetes, peripheral vascular disease, and other illnesses out of the test tube and into animals by demonstrating it restores nerve and blood vessel growth in mice. The research has particularly important im...

Wisconsin scientists grow two new stem cell lines in animal cell-free culture

Scientists working at the WiCell Research Institute, a private laboratory affiliated with the University of Wisconsin-Madison, have developed a precisely defined stem cell culture system free of animal cells and used it to derived two new human embryonic stem cell The new work, which is reported...

How to grow a bigger brain

Hatchery-reared steelhead trout show increased growth of some parts of the brain when small stones are scattered on the bottom of their tank, according to a new study by researchers at UC Davis. The brains of those young fish were closer to those of salmon reared in the wild, and the fish also show...

Group proves it's possible to grow new lung alveoli by growing new blood vessels

The good news is that medical advances in perinatal care have allowed us to save many more premature babies. The bad news is they're often at risk of developing bronchopulmonary dysplasia--a chronic lung disease caused by having to place the tiny infants on ventilators and oxygen-rich therapy for a...

Scientists use stem cells to grow cartilage

Scientists from Imperial College London have successfully converted human embryonic stem cells into cartilage cells, offering encouragement that replacement cartilage could one day be grown for transplantation. Cartilage is the dense connective tissue usually found between bones to allow the smoo...

High carbon dioxide levels spur Southern pines to grow more needles

A Duke University study has found that maturing stands of pines exposed to the higher levels of carbon dioxide expected by mid-century produce more needles than those absorbing today's levels of the gas, even under drought conditions. However, the study also found that lack of soil nutrients may im...

Researchers grow stem cells from human skin

Researchers at Wake Forest University School of Medicine have successfully isolated stem cells from human skin, expanded them in the laboratory and coaxed them into becoming fat, muscle and bone cells. The study, one of the first studies to show the ability of a single adult stem cell to become mul...

New method shows it is possible to grow bone for grafts within a patient's body

An international team of biomedical engineers has demonstrated for the first time that it is possible to grow healthy new bone reliably in one part of the body and use it to repair damaged bone at a different location. The research, which is based on a dramatic departure from the current practic...

Cerebral navigation: How do nerve fibers know what direction to grow in?

Nervous system development requires billions of neurons to migrate to the appropriate locations in the brain and grow nerve fibers (axons) that connect to other nerve cells in an intricate network. Growth cones, structures in the tips of growing axons, are responsible for steering axons in the righ...

Wisconsin scientists grow critical nerve cells

After years of trial and error, scientists have coaxed human embryonic stem cells to become spinal motor neurons, critical nervous system pathways that relay messages from the brain to the rest of the body. The new findings, reported online today (Jan. 30, 2005) in the journal Nature Biotechnolo...

NIH stimulus funding supports Emory biomedical scientists

... a response to exercise or injury or bad, enabling the growth of a tumor. This project examines Syk, a molecule that appears to push blood vessels to grow in response to low oxygen. Finding ways to block such growth signals could generate new tools to fight cancer. New treatments for epilepsy: Some ep...

'Green' energy from algae

.... Apart from CO 2 -neutral closed loop management, algae have an-other advantage: Industrial CO 2 emissions may be used as a "re-source", as algae grow faster at high carbon dioxide concentrations and, hence, produce more biomass for energy production. However, this is not their only advantage: "Co...

Antibody targeting of glioblastoma shows promise in preclinical tests, say Lombardi researchers

...ented tumors from growing. For example untreated tumors grew to an average size of 350 cubic millimeters after three weeks, but treated tumors did not grow beyond their initial 25 cubic millimeters. Wellstein says a phase I clinical trial of the therapy is in the discussion stage, but much remains to ...

Nanoparticle-delivered 'suicide' genes slowed ovarian tumor growth

...fold, this was significantly less than the between 4.1-fold and 6-fold increase in control mice. Furthermore, four of the treated tumors failed to grow at all, while all control tumors increased in size. Administration of nanoparticles to three different ovarian cancer mouse models prolonged lifespan ...

A crystal ball for brain cancer?

...h water movement in tumors to positive drug response, the UCLA team predicted with 70 percent accuracy which patients' tumors were the least likely to grow six months after therapy. Bronnie McNabb, 57, considers himself lucky. When his aggressive brain cancer returned after chemotherapy and radiation,...

Little-known protein found to be key player

... said. "It grows. It retracts. It expands. It collapses. It's highly dynamic, and for that to be the case, there has to be a mechanism by which it can grow new pieces and connect those pieces together. That's where the fusion comes in." Daga said the discovery will lay the foundation for a deeper unde...

Reprogramming human cells without inserting genes

...ne focused on embryonic stem cells, which are pluripotent, meaning they can grow into all the tissues of an adult organism. In the pluripotent state, severa... for embryonic stem cells to be rejected by a patient's immune system or to grow out of control and cause tumors. The first induced pluripotent stem cell...

Jet-propelled imaging for an ultrafast light source

...ed by Berkeley Lab's Stefano Marchesini. The test was done with protein microcrystals extracted from the fluid in which researchers were attempting to grow larger crystals. These are the smallest protein nanocrystals from which diffraction patterns have ever been obtained, and the first from membrane prot...

Large trees declining in Yosemite

...abitat loss and possible reduction in species such as spotted owls, mosses, orchids and fishers (a carnivore related to weasels). Fewer new trees will grow in the landscape because large trees are a seed source for the surrounding landscape. Large-diameter trees generally resist fire more than small-diame...

Humans 'damaging the oceans'

...pect ocean oxygen levels to decline by about six per cent for every one degree increase in temperature and areas in the sea which are low in oxygen to grow by at least 50 per cent. This has major implications for the world's most productive fishing waters in the cool temperate regions. The seas provide ar...

Study reveals a reprogrammed role for the androgen receptor

...ures that cell division progresses normally; without it, daughter cells may grow even more aggressively and be harder to stop. "The evolution of prostat...om patient to patient, but the tumor almost invariably gains the ability to grow without external androgen. One of the ways such cells re-start their gr...

Cancer's distinctive pattern of gene expression could aid early screening and prevention

...e a skin cell, you need to turn the gene off," he says. "A lot of people think of cancer cells turning genes on, like oncogenes, that allow them to grow faster, evade immune surveillance, that sort of thing," Dr. Robertson says. "There are also many genes that they also want to turn off, like ones that...

New supercomputer to reel in answers to some of Earth's problems

...ves researchers insight into how small particles in the air form clouds or break them up. Bacterial transformers: Communities of bacteria live and grow in the soil. And some bacteria have a taste for metals, a talent that can be used to clean up toxic substances in contaminated ground. Researchers use...

Common allergy drug reduces obesity and diabetes in mice

... system attacks the pancreas, destroying its ability to produce insulin. In contrast, type 2 diabetes is a strictly metabolic condition in which cells grow increasingly deaf to insulin signals and thus lose their ability to metabolize glucose. In both cases, glucose mounts in the blood, at times to fatal ...

Scientists closer to making implantable bone material, thanks to new research

... Scientists are closer to understanding how to grow replacement bones with stem cell technology, thanks to research published t...eld with it and repair the bone. So far, scientists have found they can grow small 'nodules' of what appeared to be bone-like material in the laboratory...

Newly discovered gene fusion may lead to improved prostate cancer diagnosis

...ts. Experts believe that gene fusions -- a hybrid gene formed from two previously separated genes -- may be at the root of what causes cancer cells to grow more quickly than normal cells. The new findings, published in the August issue of the journal Neoplasia , are exciting, because unlike two previo...

Spring cold snap helps with stream ecosystem research

...algae for food." Although canopy cover in the spring leads to decreased organism growth, in the autumn, bacteria and fungi decompose the leaves and grow from the nutrients, thus stimulating productivity. ...
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