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Tag: "hole" at biology news

3-D ultrasound scanner provides in-depth view of the brain

...“brain scope,” which is inserted into a dime-sized hole in the skull, may be particularly useful for the b...nk it even further, to fit through a 10 millimeter hole in the skull. "The earlier device required a hole bigger than a quarter," Light said. "Now, it's...

Smoking rate has plummeted in New York City

...smoker Ronaldo Martinez, who now breaths through a hole in his throat as a result of smoking-related cancer. In a separate recent survey, nine out of 10 smokers said they saw the ads -- and half of smokers said the ads made them want to quit. Highlights in Smoking Declines Since 2002 The smoki...

Understanding why C. difficile causes disease -- it's hungry

... and a third gene codes for a protein that makes a hole in the organism’s cell envelope to let the toxins out. The last two genes are of greatest interest to Sonenshein and his colleague, Bruno Dupuy from the Institut Pasteur. One codes for a protein, known as R, that is necessary for the expression of t...

Ants show us how to make super-highways

...eriments showed that individuals size-match to the hole they plug and cooperate to plug larger holes. "We ...We inserted planks drilled with different sizes of hole into the army ants’ trails to see how well different sizes of ant matched different sizes of pot hol...

Fitness has fallen since the days of Ancient Greece

...d in bronze plates, which meant they could ram and hole enemy ships -- a new technique in naval warfare. To ensure sufficient impact to cause damage, the triremes had to reach great speeds -- so were designed with more than three times more rowers than earlier warships. By placing the rowers on three tier...

Microbes start immune response by sneaking inside cells

...the pore, like a devious undersea diver drilling a hole in a ship hull. The team’s work joins a growing body of research revealing the importance of recently discovered receptors such as cryopyrin inside cells, known collectively as NOD-like receptors. Knowledge about NOD-like receptors is moving forwa...

The connector rotation hypothesis? Phage do not pack their DNA by rotation

...s" to glue the end of the capsid farthest from the hole to a slide using antibodies, and then they draw out the DNA being packaged in the opposite direction by attaching a magnetic bead to its loose end and applying a magnetic field. Importantly, they also labeled the connector complex with fluorescent dy...

Magnetic system could be key to surgery without scars

...m once they’re inside the human body. “A fixed hole has a limited working envelope that is conical in ...nd this is, can we do the surgery through only one hole and can we hide the hole in a cosmetically advantageous or less painful location,?Dr. Cadeddu said. ...

Record ozone loss during 2006 over South Pole

...h of the ozone hole. The size of this year's ozone hole is 28 million square km, nearly as large as the record ozone hole extension during 2000, and the depth of the ozone hole is around 100 Dobson Units, rivalling the rec...

A buffet for early human relatives

...revious method on a human tooth, you would blast a hole clear through the enamel, and museum curators wouldn't like that." Passey, who is working on his Ph.D. degree, "really made terrific advances in the lab to make this [study] possible," Cerling says. The laser was used to remove samples at var...

Neural stem cells lend the brain a surprising capacity for self-repair

...e mice would not live long, but by four weeks, the hole was largely repaired and the animals survived. "It was a big surprise. It was not known that the brain has this kind of ability to repair itself." Jan and his colleagues first discovered Numb in the fruit fly Drosophila more than 10 years ago. T...

Copying nature could save us energy, study shows

...t cockroaches gather water to the way wasps bore a hole into a tree, nature has developed a myriad of ways of solving difficult problems. "By better understanding the way in which biology defines and solves technical problems, we can develop new approaches that could significantly reduce our dependence o...

UF scientists restore sight to chickens with blinding disease

... nervous system of a chicken embryo through a tiny hole in the eggshell. The shell was resealed and the egg was incubated to hatching to produce a live chick. "The process sounds straightforward but it really isn't," Semple-Rowland said. "It took quite a long time to build the vector, develop the injecti...

Scientists find Antarctic ozone hole to recover later than expected

...A and other agencies have concluded that the ozone hole over the Antarctic will recover around 2068, nearl...sed computer model, to predict the timing of ozone hole recovery. Their findings will be published tomorrow in Geophysical Research Letters. The Antarctic...

UC Berkeley researchers create a biologically-inspired artificial compound eye

...he material below. Like a welder's torch burning a hole into metal, over time the focused light beams etch holes in the resin creating the tiny channels called self-written waveguides. Because these channels are formed at the angle of the light beams that strike them, Lee used a condenser lens to bend hi...

UCSD study finds anthrax toxins also harmful to fruit flies

...mation of sutures in the epidermis, resulting in a hole or cleft in thoracic regions of embryos and adults. This developmental process disrupted by LF treatment is similar mechanistically to wound healing, which is mediated by the same signaling pathway in humans. The EF toxin is also lethal when applied...

NASA's AURA satellite peers into Earth's ozone hole

...cy's AURA satellite, determined the seasonal ozone hole that developed over Antarctica this year is smalle...aft. Aura was launched in 2004. This year's ozone hole measured 9.4 million square miles at its peak between September and mid-October, which was slightly ...

Cells from amniotic fluid used to tissue-engineer a new trachea

...repair congenital diaphragmatic hernia (CDH), or a hole in the diaphragm that separates the lungs from the visceral organs. If the hole is large enough, the stomach and other visceral organs can end up in the chest cavity, crowding the ...

Yale scientists identify structure for RNA quality control

...sfolded small RNAs. Unlike most proteins, Ro has a hole through the middle - and the hole is used in distinguishing these RNAs," said Reinisch. Mothers with anti-Ro antibodies often have ba...

Stressed cells spark DNA repair missteps and speed evolution

...ewly synthesized genetic material. "It fixes the hole in the DNA by copying similar information," said Rosenberg. However, when the process goes wrong, the repair process introduces errors into the DNA. When graduate student Rebecca G. Ponder set up a system so that she could control where the break i...

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