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Tag: "face" at biology news

Protein folding: Building a strong foundation

...n which of their parts were the most stable in the face of chemical and thermal fluctuations. "We found that the most stable parts of the final, folded protein come together first during the folding," said co-author Pernilla Wittung-Stafshede, associate professor of biochemistry and cell biology and of ...

Coral stress 'like never in history'

...ern day reef management practices as today’s reefs face more stress than ever. But while the ancient reefs warn that we are seeing abnormal die-off rates, they also show that the reefs of the past recovered rapidly after these events, taking as little as 100 years to be repopulated by the corals that n...

Seals protect brain, conserve oxygen by turning off shivering response on icy dives

...irds and seals preserve brain cell function in the face of oxygen deficits. The study is by Folkow, Stian ...tabolism, avoid lactate buildup that occurs in the face of insufficient oxygen and require little time to recover, Folkow explained. Seals often spend 80-90...

Study highlights new and cheaper way to treat heroin addiction

... potentially fatal liver disease, Hepatitis C. We face an epidemic of Hepatitis C in Scotland, with 40% of young people who have been injecting drugs for more than two years being infected with this serious illness." ...

Malaria may fuel spread of HIV in sub-Saharan Africa

...s to spread, it will aggravate the difficulties we face with these other diseases and may contribute to the emergence of more lethal or drug-resistant strains of these infections," Kublin added. ...

New technique boosts size of proteins that can be analyzed

...essage. That's the kind of frustration researchers face when trying to identify proteins and characterize how those proteins are modified in cells by biological processes. But now, Cornell researchers have extended a powerful technique to increase by fourfold the size of a protein that can be analyzed, t...

Researchers identify a key regulator for skin stem cells

...into multiple types of tissues, one challenge they face is maintaining the stem cells in their immature state. The newly identified repressor switch could provide part of the answer. Led by Howard Hughes Medical Institute investigator Elaine Fuchs, the researchers published discovery of this regulator,...

Unique gene regulation gives chilly bugs survival advantage at bottom of the world

...espond to the normal kinds of challenges that they face in the harsh Antarctic environment. But the adults produce these proteins only when directly confronted with an environmental challenge. "Clearly there is some kind of developmental switch that happens between the larval stage and adulthood," he ad...

New study: Preterm birth causes one-third of all infant deaths

...e. "We have long known that babies born too soon face many challenges ?even death," said Joann Petrini, ... than 30 percent since 1981. Babies who do survive face risks of lifelong challenges of cerebral palsy, mental retardation, chronic lung disease, and vision...

Dig deeper to find Martian life

...e first couple of metres below the surface ?in the face of the ionizing radiation field. Finding life on Mars depends on liquid water surfacing on Mars, but the last time liquid water was widespread on Mars was billions of years ago. Even the hardiest cells we know of could not possibly survive the cosmic...

'The eyes have it' -- Autism research yields surprising results

...ions, they were able to gauge which aspects of the face were used by the autistic children to ‘read?someone’s mental state ?and how successful they were. In the second experiment, the 18 autistic children involved were as successful as non-autistic children in interpreting mental states, whether they s...

Scientists reveal structure of gateways to gene control

... on the outside edge of the nucleosome and tend to face outward on the DNA helix, allowing the cell's transcription proteins to find them more easily. "This arrangement makes sense, because when signaling proteins arrive at a control center they are well situated to help push the nucleosome out of the wa...

Satellites shed light on global warming

...Larsen Ice Shelf on the Antarctic Peninsula in the face of this warming through radar images acquired by ESA’s ERS and Envisat satellites. The retreat has been accelerating since 1992 and has culminated in two collapse events: Larsen-A in January 1995 and Larsen-B in March 2002. Envisat captured the ...

Man's earliest direct ancestors looked more apelike than previously believed

... humans developed a larger brain and more vertical face with a less pronounced jaw and smaller teeth at least 300,000 years later than commonly believed, perhaps as recently as 1.6 million to one million years ago, when two later species, H. ergaster and H. erectus, lived. Dr. Bromage presented his findi...

Ladybugs may be cute, but watch out when they get near wine

... humans developed a larger brain and more vertical face with a less pronounced jaw and smaller teeth at least 300,000 years later than commonly believed, perhaps as recently as 1.6 million to one million years ago, when two later species, H. ergaster and H. erectus, lived. Dr. Bromage presented his findi...

Ultrasound upgrade produces images that work like 3-D movies

...diagnosis of certain kinds of birth defects of the face and skull and improve surgeons' depth perception during ultrasound-guided medical procedures, including tumor biopsies and robot-assisted surgeries done through tiny "keyhole" incisions. The Duke team, which also includes Joanna Noble, an undergra...

How to manage forests in hurricane impact zones

..., GA. "But those adaptations only go so far in the face of a major hurricane. Forest owners and natural resource managers need strategies to deal with hurricane damage to coastal forests." In early fall 2005, Hurricanes Katrina and Rita caused what may be the most costly natural disaster in U.S. histo...

Twenty of world's 162 grouper species threatened with extinction

...h can be found in Hong Kong fish markets, but they face heavy and unmanaged fishing pressure that is rapidly reducing their populations. In North and South America, heavy fishing of grouper for the chilled fish markets also poses a significant threat. The Nassau grouper, once one of the most commonly l...

Mosquito genes explain response to climate change

...us genome maps are being completed, scientists now face the task of determining how genes interact and how they produce specific phenotypes (observable traits), which include photoperiodic response and dormancy. "Climate changes already are extending the growing seasons," Holzapfel said. "We know that...

Computer imaging assists with facial reconstructive surgery

...ial for plastic surgeons to accurately analyze the face before surgery so that afterward, prominent facial features such as the chin and nose are balanced in relation to the structures around them. “Even a well-executed surgery will result in a poor aesthetic result if inaccurate analysis leads to an imp...

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