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Tag: "traveling" at biology news

Fish virus in Northeast spreading to other fish species

...ld recommend that boaters clean their boats before traveling from one body of water to another and not dump bait minnows into open water after a day of fishing. VHSV was first reported in 1988 in the United States in spawning salmon in the Pacific Northwest. It was reported in North American freshwater fish i...

Scientist-astronaut sends T-cells into space

...her at the San Francisco VA Medical Center will be traveling to the Cosmodrome space-launch site at Baikonur, Kazakhstan, this Saturday, Sept. 2, 2006, to prepare a crucial experiment designed to demonstrate how human immune response is suppressed in the weightless environment of space. Millie Hughes-Fulford...

Study fishes out new role for prostaglandins

...is really important," DuBois explains. "If you are traveling and have to get to the train station at a particular time, if you are too slow, you are going to miss the train. If you don't get on that part of the trip, that disturbs the whole agenda." "Development synchronizes or orchestrates a myriad of events...

More evidence mammals, fruit flies share make-up on function of biological clocks

...ch light is manipulated to mimic the experience of traveling over multiple time zones) in the lab. In mammals, however, Cry assists in the 24-hour rhythmic expression of clock genes and has nothing to do with re-setting the clock. The researchers sought to determine additional roles for Cry in fruit flies by...

Nano-particles effective in killing cancer with one-two punch of chemotherapeutics

...eorizes that polymersomes could be made capable of traveling to places in the body that are difficult for most drug-carrier systems to access. ...

Scientist warns of threat to last stronghold of endangered turtle

...heir travels. We think turtles from Gabon could be traveling as far afield as South America, Europe and even the Indian Ocean to feed on their jellyfish prey. Once we have detailed information our tracking work will feed directly into strategies for marine protected areas in Gabon and farther afield and more...

'Shuttling' protein possibly key to resilience of cancer cells

...ear export signal is blocked, preventing ATF2 from traveling from the nucleus to the cytoplasm. Researchers had already known that chemotherapy and radiation cause cancer cells to increase production of ATF2. The Purdue researchers found that "overexpressed," or overproduced, ATF2 is predominantly located in ...

Findings advance use of adult stem cells for replacement bone

... ago," Datta said. "I never anticipated I would be traveling to international conferences, for example, but from the very beginning Dr. Mikos treated me as a valuable member of his research team. He provided encouragement. He let me follow my ideas. In short, he is the perfect mentor." ...

Infection 'alarm' yields clues to immune system behavior

...series of chemical reactions that act like signals traveling over a telephone wire, TNF's message moves along this pathway from the cell's surface to its nucleus. At the end of this pathway, NF-kappaB molecules are released to carry the alarm into the nucleus, the cell's control center. Inside the nucleus, th...

Nanoparticles, nanoshells, nanotubes: How tiny specks may provide powerful tools against cancer

...umors are ill-formed and permeable, and nanoshells traveling through blood end up spilling out of these leaky vessels into tumor tissue. Once there, the tumor only slowly excretes them as waste. The nanoshells are also hidden from the immune system because they are "shielded" by a protective polymer coating, p...

Frog peptides block HIV in lab study

...n the subject was awake, rippled across the brain, traveling along networks of nerve fibers to different cerebral destinations. But when the subject was in deep sleep, the same response was quickly extinguished and did not travel beyond the stimulated cells. When consciousness fades, according to Tononi, "the...

Deep sleep short-circuits brain's grid of connectivity

...n the subject was awake, rippled across the brain, traveling along networks of nerve fibers to different cerebral destinations. But when the subject was in deep sleep, the same response was quickly extinguished and did not travel beyond the stimulated cells. When consciousness fades, according to Tononi, "the...

Fragment of yellow fever virus may hold key to safer vaccine

...ation is the key strategy for people living in and traveling to tropical Africa, South America, and several Caribbean Islands, where yellow fever is endemic. In the last 20 years, however, yellow fever has been on the rise, mostly due to the lapse of immunization programs in high risk areas. More recently, se...

New tool reveals secrets of migrating cells

...thymocytes or immature T cells were highly mobile, traveling thousands of microns in an hour as they explore the thymus. The new experiments, conducted primarily by Witt, suggest that this exploration probably is a search for a signal that will decide the cell's fate. In their experiments on one lobe of the m...

Researchers reveal secrets of flying snakes

... found that paradise tree snakes are true gliders, traveling further horizontally than dropping vertically. The best flight Socha recorded traveled 13 degrees from the horizon at the end of its trajectory. Socha correlated 19 performance variables, such as glide angle and horizontal speed, of the snake's flig...

Norovirus found to cause traveler's diarrhea

... prevalence of Norovirus infection among civilians traveling from industrialized to developing countries," said Kellogg J. Schwab, PhD, corresponding author of the study and an assistant professor in the Department of Environmental Health Sciences at the Johns Hopkins Bloomberg School of Public Health. He exp...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...hat low-frequency vibrations have the potential of traveling up to 20 miles in the ground--potentially three ti...erty, around age 12, they get kicked out and start traveling alone or forming small bachelor herds." The search for a mate in this vast wilderness is further com...

Norovirus, AIDS vaccine and Hepatitis Virus

...t is estimated that 20 to 50 percent of the people traveling to tropical areas of the world will experience traveler's diarrhea (TD). TD, defined as three or more loose stool movements in a 24-hour period, frequently results from exposure to bacterial or viral pathogens. Noroviruses (NoV's) are considered to b...

Researchers reveal the infectious impact of salmon farms on wild salmon

... km. The fish start in the rivers and head to sea, traveling en masse in large mixed schools. Thus the scientists could see the effect on the salmon as they moved toward the farm. They found that the juvenile salmon carried almost no sea lice prior to the farm but became heavily infected as they approached it....

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