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Tag: "thin" at biology news

Wisconsin scientists grow critical nerve cells

...d, Zhang and his team deduced that there is only a thin sliver of time - roughly the third and fourth week of human development - in which stem cells could be successfully prodded to transform themselves into spinal motor neurons. In addition to the narrow time frame, it was also critical to expose the g...

UAB scientists discover the origin of a mysterious physical force

...uch as DNA and some biological compounds, and when thin films form in detergents. The discovery has been published in today's edition of Physical Review Letters. Water is the solvent in which most physical, chemical and biological processes take place. Therefore, it is essential to understand the nature ...

University of Manchester makes made-to-measure skin and bones a reality using inkjet printers

... grows. The structures are created by printingvery thin layers of a material repeatedly on top of each other untilthe structure is built. Each layer is just 10 microns thick (1,000layers equals 1cm in thickness).This method allows larger tissues to be grown than previously possible.The reason for this is ...

Tiny particles could solve billion-dollar problem

...hat consists of a gold nanoparticle covered with a thin coat of palladium atoms. As metal particles get progressively smaller, a higher percentage of the atoms in the particle are found on the surface of the particle instead of being locked away inside the metal where they cannot interact with other chem...

The transparent organism: EMBLEM and Carl Zeiss give labs a unique look at life

... very fuzzy. In SPIM, a sample is passed through a thin sheet of light, capturing high-quality images layer-by-layer. The sample can be rotated and viewed along different directions, further eliminating the blurry and unwanted light which prevented scientists from looking deep into tissues in the past. Th...

Researchers reveal the infectious impact of salmon farms on wild salmon

...tudy area, the salmon farms are anchored in a long thin fjord. Here the wild salmon have no choice but to pass by the farm on their seaward migration. The scientists developed new, non-lethal sampling techniques that allowed them to examine thousands of the fish for parasites, taking measurements every 2...

First 'atlas' of key brain genes could speed research on cancer, neurological diseases

...eveloping mice.Using genetic probes to investigate thin sections of mouse brains, thescientists found that only 349 of the TF genes were expressed inspecific regions, and not throughout the brain, as the majority were.They inferred that these 349 genes, therefore, controlled thedevelopment of the particul...

Open microfluidic and nanofluidic systems

...luding localized droplets, extended filaments, and thin wedges at the lower channel corners. Examples for ...ocalized droplets (D), extended filaments (F), and thin wedges (W) at the channel corners. For microfluidics applications, the most important morphology reg...

Study shows nanoshells ideal as chemical nanosensors

...n, now with Nanospectra Biosciences, Inc., created thin films ofnanoshells deposited atop plates of glass. Films with various densitieswere studied, as were films containing both silver and gold nanoshells.Through painstaking analysis, Halas and Jackson showed that thenanoshells' 10 billion-fold increase ...

Ice core 'dipstick' indicates West Antarctic ice has thinned less than believed

...one year's worth of snowfall compacted into a very thin band, researchers were able to extract an isotope record that provided a picture of temperature and snowfall patterns near Siple Dome. The layers get thinner and thinner with depth, as more ice and snow piles up. But the thinness of the layers deposi...

Polymers with copper show promise for implanted sensors

...aid. In addition, the polymer coating must be very thin for most biomedical applications, which limits the...ric oxide that can be stored and released from the thin coating on the sensor surface. The new approach is to make polymers that generate nitric oxide from...

Researchers unlock mechanism creating jigsaw puzzle-like plant cells

...d the molecular give and take that allows cells in thin structures such as leaves to develop in a jigsaw-like pattern, providing the leaf a surprising degree of strength. The findings were published in today's edition of the journal Cell. Zhenbiao Yang, a professor of plant cell biology at the UCR's Cent...

One gene links newborn neurons with those that die in diseases such as Alzheimer's

...ished under the microscope. Then, looking at very thin slices of brain tissue, the researchers used a technique called laser capture microdissection to collect cells of each type. From these they purified RNA, the quantity of which corresponds to the activity of the particular gene producing it. The micr...

Low oxygen likely made Great Dying worse, greatly delayed recovery

...ent would have been the same as it is today in the thin air at 17,400 feet, higher than any permanent human habitation. That means even animals at sea level would have been oxygen challenged. Huey and UW paleontologist Peter Ward are authors of a paper detailing the work, published in the April 15 editio...

Scientists reveal the shape of a protein that helps retroviruses break into cells

...ent would have been the same as it is today in the thin air at 17,400 feet, higher than any permanent human habitation. That means even animals at sea level would have been oxygen challenged. Huey and UW paleontologist Peter Ward are authors of a paper detailing the work, published in the April 15 editio...

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

...nt site." Long bones in the body are covered by a thin outer layer called the periosteum. The layer is a little like scotch tape: the outside is tough and fibrous but the inside is covered with a layer of special pluripotent cells which, like marrow cells, are capable of transforming into the different t...

Motor transport in bio-nano systems

...motors are nanoscale engines which move along very thin rod-like filaments and, in this way, drive the hea...ements are based on two molecular components: very thin rod-like filaments, which form a complex network of rails, and molecular motors, which move along th...

Researchers Discover That Microbes Can Produce Miniature Electrical Wires

...thousand times long as they are wide. “Such long, thin conductive structures are unprecedented in biology,?said Lovley. “This completely changes our concept of how microorganisms can handle electrons, and it also seems likely that microbial nanowires could be useful materials for the development of extre...

Spiders help scientists discover how muscles relax

... The thick filaments are arranged in parallel with thin filaments of another muscle protein, actin. When the actin and myosin filaments slide along one another, the muscle contracts or relaxes. Padron's study focused on the long, rod-shaped myosin of the thick filaments. The heads of these myosin rods pr...

Woods Hole Research Center plans controlled burn in Amazon rainforest

... of their trunks ?the fire lingered close to their thin bark long enough to damage the delicate cambium beneath, permanently cutting off the flow of sap between the roots and the leaves. While most trees in this ecosystem never evolved thick bark to protect themselves from fire, some appear more vulnerabl...

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