Biology articlesResearchers examine how cells change the pace of their steps
Scientists at UC San Diego have discovered how cells of higher organisms change the speed at which they move, a basic biological discovery that may help researchers devise ways to prevent cancer cells from spreading throughout the body.
Conquest of land began in shark genome
When the first four-legged animals sprouted fingers and toes, they took an ancient genetic recipe and simply extended the cooking time, say University of Florida scientists writing in the journal PLoS ONE.
Protein plays an important role in increased skin pigmentation that can help protect against harmful uv exposure
Researchers have identified a protein that plays an important, early role in the increase of protective skin pigmentation after exposure to ultraviolet (UV) radiation. The protein, called SOX9, is a transcription factor known to participate in embryo development and to be expressed in many adult tissues including the heart, kidney, and brain.
Team finds way to create cancer stem cells
MIT scientists and colleagues have found a way to create in the lab large amounts of cancer stem cells, or cells that can initiate tumors. The work, reported in the August 13 issue of Cancer Cell, could be a boon to researchers who study these elusive cells. Labs could easily grow them for use in experiments.
Mit creates 3d images of living cell
A new imaging technique developed at MIT has allowed scientists to create the first 3D images of a living cell, using a method similar to the X-ray CT scans doctors use to see inside the body.
X-ray images help explain limits to insect body size
Researchers at the U.S. Department of Energy's Argonne National Laboratory have cast new light on why the giant insects that lived millions of years ago disappeared.
There is nothing like experience, even for ants
Certain species of ants in Japan have fascinating behavior. Since they reproduce asexually, they are all clones of each other. Another distinctive feature is that they feed on ants (of other species). Without any hierarchy inside the nest, how are roles distributed? The experience they acquire when young determines their "job" as adults.
Today's white rice is mutation spread by early farmers
Some 10,000 years ago white rice evolved from wild red rice and began spreading around the globe. But how did this happen?
Birds learn to fly with a little help from their ancestors
A researcher at the University of Sheffield has discovered that the reason birds learn to fly so easily is because latent memories may have been left behind by their ancestors.
Giant panda can survive
The giant panda is not at an "evolutionary dead end" and could have a long term viable future, according to new research involving scientists from Cardiff University.
First orchid fossil puts showy blooms at some 80 million years old
Biologists at Harvard University have identified the ancient fossilized remains of a pollen-bearing bee as the first hint of orchids in the fossil record, a find they say suggests orchids are old enough to have co-existed with dinosaurs.
Social habits of cells may hold key to fighting diseases
Scientists in Manchester are working to change the social habits of living cells - an innovation that could bring about cleaner and greener fuel and help fight diseases such as cancer and diabetes.
Researchers propose new molecule to explain circadian clock
The internal clock in living beings that regulates sleeping and waking patterns -- usually called the circadian clock -- has often befuddled scientists due to its mysterious time delays. Molecular interactions that regulate the circadian clock happen within milliseconds, yet the body clock resets about every 24 hours. What, then, stretches the expression of the clock over such a relatively long period?
Bioengineers devise nanoscale system to measure cellular forces
University of Pennsylvania researchers have designed a nanoscale system to observe and measure how individual cells react to external forces.
Discovery may help defang viruses
Researchers may be able to tinker with a single amino acid of an enzyme that helps viruses multiply to render them harmless, according to molecular biologists who say the discovery could pave the way for a fast and cheap method of making vaccines.
Researchers find new taste in fruit flies: carbonated water
That fruit fly hovering over your kitchen counter may be attracted to more than the bananas that are going brown; it may also want a sip of your carbonated water. Fruit flies detect and are attracted to the taste of carbon dioxide dissolved in water, such as water found on rotting fruits containing yeast, concludes a study appearing in the August 30 issue of the journal Nature.
Elephantnose fish 'see' with their chin
Originating in Central Africa, Peters' elephantnose fish (Gnathonemus petersii), finds its bearings by means of weak electrical fields. Scientists from the University of Bonn have now been able to show how well this works.
The grapevine genome is completely sequenced
A major achievement has been reached in plant biology: the first detailed analysis of the grapevine genome has just been published.
A German-American research collaboration discovers how the immune system can drive the formation of new species.
Understanding bacteria and enzymes
The adaptable nature of bacteria makes it possible to exploit particular strains for their beneficial qualities. The natural biodegradation of organic waste can be greatly enhanced by the introduction of naturally occurring, non genetically engineered, non pathogenic bacteria.