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Tag: "hits" at biology news

Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer

...so may help researchers understand why the disease hits only a small fraction of those who are hosts to the parasite. "Intestinal infections are one of the major health problems in developing countries and the number of people who are infected with amoeba cysts is enormous," he says. Typically, those cys...

Multiple Campylobacter Genomes Sequenced

...cterial genomes have been completed, and a new one hits the scientific press most weeks. This burgeoning industry is not just scientific “stamp collecting,?however. Having all these genome sequences may provide useful clues about why some bacteria cause human disease, how to control their spread, and how ...

Study reveals dramatic difference between breast cancers in US and Africa

...east cancer strikes fewer women in Africa, "but it hits earlier and harder," said Olopade. In America, most breast cancer occurs after menopause, usually in the late 50s or 60s. In Africa, it most often strikes women in their 40s. The average age of the African women in this study was 44. Studies suggest...

Hydrogen and methane provide raw energy for life at 'Lost City'

...luid that looks like dark, billowing smoke when it hits the icy cold seawater. Carbonate minerals from fluids at Lost City drape nearby cliffs in brilliant white and form vents ranging in shape from tiny toadstools to the 18-story column, named Poseidon, which dwarfs most known black smoker vents by at l...

Duke Experiments Boost Radiation's Cancer-Killing Effects

...loyed a treatment strategy where we accomplish two hits ?killing the cancer cells with radiation and then blocking their blood vessel survival and re-growth by inhibiting HIF-1," said Moeller. Conversely, when the scientists blocked HIF-1 before radiation, there was no overall inhibition of tumor growth....

IBM Transforms the Art of Scientific Expeditions

...loyed a treatment strategy where we accomplish two hits ?killing the cancer cells with radiation and then blocking their blood vessel survival and re-growth by inhibiting HIF-1," said Moeller. Conversely, when the scientists blocked HIF-1 before radiation, there was no overall inhibition of tumor growth....

Visceral Leishmaniasis: Successful Vaccine Trial In Dogs

...hich is the most severe form of the leishmaniases, hits an annual total of 500 000 people, mostly in the developing countries. It is caused by the parasite Leishmania infantum. A flagellate protozoan, it uses as vector an insect resembling a midge, the sand fly, colonizing the intestine and then the saliv...

Scientists get first glimpse at how plants, most animals repair UV-damaged DNA

... the pocket. Then, when a photon of visible light hits the pocket, the enzyme becomes excited, and expels one of its own electrons into the dimer, which forces a rearrangement of the atoms in the DNA. "From our work, we see that in less than a billionth of a second, the damaged DNA bases can recover the...

The Antarctic Ocean floor

...n the other hand the Box-corer is cast and once it hits the bottom it takes a 50cm x 50cm sample thereof for subsequent analysis on deck. With this sample we can quantify the number of each species per square metre, its biomass, and so on. Thus it is known as a quantified sample of the ocean floor. When ...

Scientist warns of threat to last stronghold of endangered turtle

...d is creating much interest with more than 100,000 hits from over 150 countries on the site www.seaturtle.org/tracking each month. It's thought that globally more than 50,000 leatherback turtles are incidentally caught by fisherman trawling for other species each year. Of these, thousands are thought ...

Weizmann Institute scientists discover a molecular security mechanism for keeping mutations in check

... that is more "careless" and can improvise when it hits a snag, evolved in the cell. "Error-prone DNA repair," as it's called, is based on a compromise: The cell lives, but at the price of allowing genetic mutations to be carried over in cell division. The body's solution to minimizing mutations is to ha...

Amateur boxing linked to brain cell injury

...the first assessment, the boxers reported how many hits to the head they received during the match and und...tau probably reflect damage to neuronal axons from hits to the head during a bout." They also had elevated levels of glial fibrillary acidic protein, which...

Embryonic patterning makes the feathers fly

...s with specific inhibitors. They got their biggest hits with the so-called mitogen-activated protein kinase, or MAPK, pathway. Manipulating the MAPK pathway produced a wide repertoire of feather patterning, from spots, to stripes, to homogenous patches, all reflecting varying degrees of inhibited feather ...

New findings could lead to vaccine for severe malaria

The most severe form of malaria hits pregnant women and children the hardest. A joint study between Karolinska Institutet in Sweden and Makerere University in Uganda has now produced some important findings on how the malaria parasite conceals itself in the placenta. Plasmodium falcipa...

How to manage forests in hurricane impact zones

...nication should be put into place before the storm hits to meet both the short-term goals of salvage and fire prevention and the long-term goal of reforestation and ecological recovery." Stanturf and fellow authors use the case study of Hurricanes Katrina and Rita to illustrate the major decisions and ...

Bypassing eggs, flu vaccine grown in insect cells shows promise

...ight also be advisable in case a bird flu pandemic hits chicken flocks hard. The insect-cell technology also simplifies the manufacturing process in another way: A live flu virus is needed when growing vaccine in eggs, a danger when working with a potent bird-flu strain. The technology would also help ...

Does amateur boxing cause brain damage?

...r boxers who had received more than 15 high impact hits to the head compared with boxers who reported fewe...e boxers who had received more than 15 high impact hits to the head had seven to eight times higher NFL-levels post fight compared to their levels following...

Genome of Clostridium botulinum reveals the background to world's deadliest toxin

...t lies in wait and, if it gets the opportunity, it hits its host with a microbial sledgehammer. It then eats the remains and lays low until the next host comes along." The genome sequence is peppered with genes that produce enzymes to digest proteins and other animal material in the soil. Also found, u...

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