Tag: "external" at biology news

Prenatal alcohol exposure affects visual processing

...o are not," said Coles. "I think dysmorphia is an external sign of internal neurological damage. We know that facial features are forming pretty much at the same time as the brain so we would assume that those people who were dysmorphic would be more likely to be neurologically damaged as well. We include...

Sounding the alarm for infections: EMBL researchers discover rapid-response, interferon-producing cells

... IPCs. The laboratory in Monterotondo, which is an external unit of EMBLs headquarters in Heidelberg, specializes in mouse biology. It also has what Kalinke calls the Virus Suite, a set of activities that make it possible to study infectious diseases in both animals and cell cultures. They began their search ...

Kingston named Virginia Outstanding Scientist of 2002

...anies, and has brought in more than $10 million in external funding to Virginia Tech. He has received numerous awards, including the Research Achievement Award from the American Society of Pharmacognosy in 1999 and the Gene Wise Award from the Blue Ridge Section of the American Chemical Society that same yea...

Lizards and salamanders may use lungs to hear, study says

...gh salamanders lack middle and external ears, both groups of animals have inner ears that can process sound. In his studies, Hetherington found that sound causes the animal's chest to vibra...

US scientist testifies for prosecution in Milosevic trial

... distinct surges that suggest "the existence of an external cause." "When the overall estimates are compared at the regional level, a clear relationship remains between the patterns of refugee flow and killings," according to Ball's report to the tribunal. "The structure of the patterns in both refugee flow...

Study tracks health of rescue dogs, handlers involved in searches at World Trade Center and Pentagon

...ng personality traits and prior history of trauma; external factors such as social support and the stability of marriages; and hints of clinically significant depression and post-traumatic stress disorder. For those showing signs of ongoing difficulties, Hunts team will offer assistance in the form of modifi...

Rush opens tissue and cell lab to produce cellular products

...es to area hospitals and biotechnology firms as an external lab to handle sensitive human tissue and cell research and treatment. Historically, cancer treatments relied primarily on surgery, radiation and/or chemotherapy. In the last decade, however, scientists have realized that when cancer occurs, it is be...

Tibetans retain resistance to the oxygen-deficient disorder hypoxia regardless of altitude

...ly residing at sea level, hypoxia can be caused by external factors, such as a sudden arrival in Tibet, or by "internal impairments," within the body where cells receive insufficient oxygen. Regardless of the cause of the hypoxia, a wide range of disorders may occur. How can Tibetans function normally at a...

Diabetes tied to altering of the heart's circadian clock

...initiate important stimuli to several internal and external environmental changes, thereby contributing to hea...wing perception of the time of day, independent of external influences. These internal clocks provide the selective advantage of anticipation, allowing an organ...

Damaged DNA synthesis enzyme shown to cause progressive muscle weakening

...sease, in this case a condition called progressive external ophthalmoplegia. The scientists said that their wo...ten the muscular degeneration known as progressive external ophthalmoplegia. Recently, this disease was linked to a mutation (called Y955C) in one of the cell'...

Making embryos male

...eristics to the embryo, including the internal and external male genitalia. This discovery posits DHH as the only known factor to induce fetal Leydig cell differentiation. DHH is one of three mammalian homologs of a protein called Hedgehog, which was originally identified in the Drosophila fruit fly, where i...

Rainforest wildlife surprisingly sensitive to landscape changes

...n their diversity and dynamics, and to withstand external threats from such human disturbances as burning, logging and hunting. The Biological Dynamics of Forest Fragment Project, a joint effort of the National Institute for Amazonian Research (INPA) in Brazil and the Smithsonian Tropical Research Institute...

Physics tip sheet #18 June 19, 2002

...to enhance prey detection, to orient themselves in external magnetic fields and to detect mates. However, the process of the electrical sensing is poorly understood. Some areas of a shark's body, such as the "cheeks" contain a high density of gel-filled bulbs that connect to gel-filled canals 3-20 centimeters...

Researcher turns brown algae phylogeny upside down

...d Sargassum muticum grow. As well as examining the external characteristics of the brown algae, the researchers from Leiden University and the University of Groningen also compared the DNA composition of the various species. Previous studies had also examined the DNA but this was done in a less structured and...

New 'fuzzy' polymers could improve the performance of electronic brain implants

...ve signals it can interpret and use to activate an external device. The technique has been called a spinal cor... go before humans will be effortlessly controlling external devices with their mind. "Our interest is in finding materials and processing schemes that can help ...

MIT technique could improve cartilage repair

...uld be implanted arthroscopically, through a small external incision. Such minimally invasive surgery is not only less expensive, but "reduces the recovery time for the patient," Grodzinsky said. In 1993, Zhang discovered that proteins in the human body, when in fragments called peptides, can be tweaked to se...

New metabolic 'switches' discovered

...ors" (GPCRs) on the cell surface, which respond to external chemical signals such as hormones. Once such an external signal activates a receptor, it switches on its coupled G protein, which in turn triggers a cell res...

Men die young, even when they're old

...from car crashes to heart disease to homicide. For external causes of death, such as accidents, the difference between the sexes is greatest for young adults. But the second largest disparity between men and women in the US occurs when they reach their sixties. At that point in their life, men are 1.68 times ...

Marine biodiversity essential to preserving species

...atic changes either naturally or when pressured by external forces such as fishing, Hixon said. It's not unusual for fish populations within a certain species and location to vary by as much as 10 to 100 times. However, when there's a proper and natural balance between a species, its competitors and its pred...

Chicago researchers find why uncircumcised men have more HIV

...tible to HIV infection than cervical tissue or the external layers of foreskin, which explains why uncircumcised men seem to be at much higher risk for HIV acquisition than men who are circumcised. Previously, numerous studies reported that uncircumcised men have higher rates of HIV infection and are at a tw...

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