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Tag: "grow" at biology news

Who gives stem cells their marching orders?

...ce is crucial to our ability to coax stem cells to grow into specific tissues outside the body. And it is also important if we are to understand and perhaps correct what goes wrong when the chemical signaling system goes awry and stem cells become cancerous. Research has shown that the chemical soup in ...

A buffet for early human relatives

... both the forest and savanna, and C4 plants, which grow mostly on the savanna and include potato-like tubers, grasses, and seeds and roots from grasses. If the early hominids ate meat from grass-grazing animals like antelope, the C4 "signal" also shows up in their teeth. "Hominids were taking advantag...

Researchers identify a key regulator for skin stem cells

...ve important implications for scientists trying to grow stem cells in the lab, for both research and potential therapies. As researchers seek ways to manipulate stem cells, which have the ability to differentiate into multiple types of tissues, one challenge they face is maintaining the stem cells in the...

Scientists crack genetic secrets of human egg

...ls, including stem cells, which can be directed to grow into new tissue. This potential could be used to c... diseases. Cibelli said his team's mission is to grow stem cells without using fertilized embryos, which can be controversial. This work used onlyunfertil...

GlycoFi and Dartmouth report full humanization of yeast glycosylation pathway in Science

...rs, shorter fermentation times, and the ability to grow in chemically defined media, without risk of viral contamination from animal-derived ingredients. "Switching to this technology will also provide improvements in product uniformity and overall production economics," Dr. Gerngross said. He noted tha...

Newly identified biomarker detects and regulates spread of brain tumors

...lls exhibit and how quickly the tumor is likely to grow and spread and is a predictor of patient outcome. ... whereas high-grade tumors are highly abnormal and grow and spread quickly, making treatment more difficult. Patients with highly malignant astrocytomas typ...

Virus may control Australia's

...d in polluted, poorly oxygenated water. "The fish grow to up to 20 kilograms or more in weight and each female can lay up to three million eggs in a single season," Dr Crane says. "In some areas of south-eastern Australia carp make up more than 85 per cent of the fish in the rivers and creeks. "The viru...

Rescuing injured hearts by enhancing regeneration

...er a heart attack, the damaged heart muscle cannot grow back and is instead replaced by scar tissue. Excessive scarring can impair the heart's pumping capacity and can lead to life-threatening arrhythmias. Heart-muscle cells (cardiomyocytes) normally cannot replicate in mammals, a major obstacle to regene...

Carnegie Mellon scientists use 'green' approach to transform plastics manufacturing

...ade using this method. For example, chemists could grow high molecular weight polymers with precise control, providing even larger templates for nanoscale carbon structures used in computer screen field emission displays and semi-conductors that regulate the flow of electricity in sensors, some only a fra...

Drug can quickly mobilize an army of cells to repair injury

... impaired. Both drugs induced new blood vessels to grow in the affected legs of the mice, and combining the drugs had the greatest benefit. "We are now working to set up a clinical trial to test G-CSF in patients with peripheral vascular disease," Link says. "We chose G-CSF in this case because it's not ...

End of deforestation in view? Experts advance new way to size up global forest resources

...ustrial wood production in forest plantations will grow from an estimated one-third today to half by 2025 and three-quarters by 2050. "Plantations and the trade to make them effective reduce the impact of industrial pressures on the expanse of natural forests, which may be rich in soil carbon and bio...

Giant insects might reign if only there was more oxygen in the air

...the higher oxygen concentration allowed insects to grow much bigger. Tubes carry oxygen First, a b... were surprised to see it crawl away. Tracheae grow disproportionately This experiment was designed to find out: how much room the tracheal sy...

Sandia researchers discover way to see how a drug attaches to a cell

...llowing the drug to bind to a cell, using light to grow a nanometer-sized particle. The nanoparticles can then be imaged with electron microscopy to reveal the location of the drug receptor molecules on the cell," Shelnutt says. "This type of nanotagging technique might be used in non-biological applicati...

'Trojan Horse' agent halts bone metastasis in mice

...tops the bone destruction needed for the cancer to grow and may inhibit blood vessel growth to the metastasized tumor, Rosenblum says. "The fact that this form of VEGF targeting works on different cell receptors in blood vessels and in bone cells is a unique finding that could be clinically significant...

An artificial cornea is in sight, thanks to biomimetic hydrogels

...ic tissues. Then a clear layer of epithelial cells grow over the disc. 'Broadly interdisciplinary' S... becomes biointegrated when clear epithelial cells grow over the top of the inlayed lens. Inlays offer an advantage over LASIK surgery, which works but is...

Most important actors in the growth process of neurons identified

...on's growth, three things can happen: the axon can grow further, pull back, or change direction. Therefore, axon growth is a process that consists of several components: growth of the axon, orientation, recognition of objectives, and finally formation of synapses in order to transmit stimuli. Unraveling p...

For Pacific white shrimp, gender matters when competing for food

...and shrimp-based products, identifying shrimp that grow more efficiently will be an important tool to maximizing production. ...

Chemical tests of cell growth enter third dimension

... bioreactor (FBB) is a device that allows cells to grow in natural 3D bundles. In the body, cells cling to...with laboratory testing methods that normally only grow cells in two dimensions. Such tests are normally done on cells in trays containing many tiny wells....

For crickets, parasitic flies can stop the music

...posit larvae that burrow into their amorous hosts, grow for about a week and then tear their way out in "Alien" fashion, killing the cricket as they emerge. Now, University of Florida zoologists have found that the danger posed by the flies has apparently affected when crickets sing. In experiments wit...

Microbe fixes nitrogen at a blistering 92 C

...2 C, therefore, widens the realm of where life can grow in the subseafloor biosphere and other nitrogen-li...e looking sphere of a microbe, FS406-22 is able to grow with gaseous nitrogen as its sole source of nitrogen at temperatures ranging from 58 to 92 C, with t...

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