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Tag: "routes" at biology news

Migration alert -- How tumor cells home in on the lymphatic system

...ow” which lymphatic vessels will be more effective routes for dissemination,” she explains. “Therapeutically, it indicates that a drug target for lymph node metastases could be blocking the signaling molecule or its receptor on the tumor cell.”...

How the brain's backup system compensates for stroke

...trategies after brain damage results in the normal routes to action being compromised." The researchers concluded that their experiments showed that "In the initial stages of adaptive compensation for neuronal interference, the adult brain exploits pre-established patterns of functional specialization. W...

In Iran, cheetahs collared for the first time

...llars will furnish very precise information on the routes that cheetahs use to travel between protected areas, and will reveal the key features in the landscapes that are critical to their survival. . "This is an amazing milestone in securing the long-term future for the Asiatic cheetah," said Wildlife C...

UCI scientists reconstruct migration of avian flu virus

...angdong, and they identified many of the migration routes through which the strains spread regionally and internationally. By knowing where H5N1 strains develop and migrate, health officials can better limit the spread of the virus by strategically intervening. Local vaccinations can be better administered...

Prehistoric origins of stomach ulcers uncovered

...n DNA analysis has shown that along the major land routes out of Africa human populations become genetically isolated - the further from Eastern Africa a population is the more different genetically it is compared to other human populations. Other research has shown gradual differences in European populatio...

Genetic pathways to curable and incurable forms of pancreatic cancer identified

... "Although at their end stage the two different routes to ductal pancreatic cancer can look very much the same under the microscope, involve the same constellation of genetic events, and culminate in invasive and metastatic disease that can ultimately kill patients, one route is 100 percent fatal while t...

Ebola outbreaks killing thousands of gorillas and chimpanzees

...ransmission between ape groups might occur through routes other than direct social encounter. For instance, as many as four different gorilla groups fed in the same fruit tree on a single day. Thus, infective body fluids deposited by one group might easily be encountered by a subsequent group. Chimpanzees a...

Bats prey on nocturnally migrating songbirds

... danger seems especially acute where birds' flight routes converge around the Mediterranean basin, such as the Iberian Peninsula. This newly recognized hazard adds to the numerous obstacles that sea and desert crossings already represent for fragile migratory passerines. Actually, the newly uncovered danger...

Turtles are loyal in feeding as well as in breeding

... as loyal to specific foraging sites and migratory routes as they are to nesting sites. Published today (25 ...les showed fidelity to specific foraging sites and routes was a surprise,' said Dr Annette Broderick of the University of Exeter. 'Marine turtles migrate hund...

Two nerve cells in direct contact

...anck scientists therefore blocked the two possible routes selectively with laser ablation (the cell is filled with fluorescent dye which has a toxic effect when strongly stimulated) and tested sensitivity to rotation in the H2 cell. A long series of these technically very difficult experiments provided unam...

'Conversation stoppers' fight deadly bacterial infections

...iosynthesis in vivo and demonstrate that these new routes are especially important for the creation of a number of NAEs, including anandamide. The researchers also isolated and identified the enzyme Abh4 by combining traditional protein purification and functional proteomic technologies, concluding that Abh...

Nanotechnology propels advances in regenerative medicine research

...iosynthesis in vivo and demonstrate that these new routes are especially important for the creation of a number of NAEs, including anandamide. The researchers also isolated and identified the enzyme Abh4 by combining traditional protein purification and functional proteomic technologies, concluding that Abh...

Brown seaweed contains promising fat fighter, weight reducer

...iosynthesis in vivo and demonstrate that these new routes are especially important for the creation of a number of NAEs, including anandamide. The researchers also isolated and identified the enzyme Abh4 by combining traditional protein purification and functional proteomic technologies, concluding that Abh...

Study shows enzyme builds neurotransmitters via newly discovered pathway

...iosynthesis in vivo and demonstrate that these new routes are especially important for the creation of a number of NAEs, including anandamide. The researchers also isolated and identified the enzyme Abh4 by combining traditional protein purification and functional proteomic technologies, concluding that Abh...

Dragonfly migration resembles that of birds, scientists say

...e regions ofcoastal New Jersey. "The dragonflies' routes have showed distinct stopover and migration days,just as the birds' did," said Wikelski, an associate professor ofecology and evolutionary biology. "Additionally, groups of both birds and dragonflies did not migrate on very windy days and only moved ...

Creating a window on 'oceans in motion'

...anhandle. POST has revealed the Pacific migration routes of young wild salmon from US and Canadian rivers. Knowing their usual travels along marine highways has far-reaching implications for authorities that need to determine when fisheries should be open or closed to conserve endangered stocks. Other s...

Afghanistan to protect wildlife and wild lands

...one of the first European travelers along the silk routes to east Asia and who described the giant sheep in his writings in the late 13th Century. Other mammals known to occur in Afghanistan include the ibex, the Persian leopard, gazelles, and the elusive snow leopard. Specifically, five areas being consid...

Evolution follows few of the possible paths to antibiotic resistance

...ournal Science. "Just as there are many alternate routes one might follow in driving from Boston to New York, one intrinsic property of DNA is that very many distinct mutational paths link any two variants of a gene," says lead author Daniel M. Weinreich, a research associate in Harvard's Department of Org...

Avian influenza virus in mammals spreads beyond the site of infection to other organ systems

... cats causes systemic disease with potential novel routes of virus spread within and between hosts," appears...nd urinary tracts, greatly increasing the possible routes of mammalian transmission. Systemic disease has long been known to occur in birds, with the fecal-o...

Bacteria that cause tooth decay able to survive without important biochemical pathway

...lled YidC1 and YidC2, might be acting as alternate routes for protein delivery in the absence of the SRP pathway. They tested their hypothesis and found that S. mutans could continue to function in non-stress conditions without the SRP and YidC1 genes, but not without the YidC2 and SRP simultaneously. "The...

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