leave 2 1

Tag: "leave" at biology news

Researchers reveal the infectious impact of salmon farms on wild salmon

...ed it. Unlike other species, pink and chum salmon leave their natal rivers while still much smaller than your baby finger ?3 cm long ?and weighing only half a gram. "The youngest fish can be only days old when they encounter a farm," says Krkosek. "Some of these fish are so young their egg sacks haven't b...

Ophthalmologists Use Artificial Silicon Retina Microchip To Treat Vision Loss

...actice group and are on the Rush faculty. Patients leave the hospital the same day and will be followed for two years as part of the study, and then indefinitely. The patients were recruited from a pool of about 5,000 applicants. The implants are designed for people with retinal diseases such as macular ...

Ophthalmologists implant five patients with artificial silicon retina microchip

...actice group and are on the Rush faculty. Patients leave the hospital the same day and will be followed for two years as part of the study, and then indefinitely. The patients were recruited from a pool of about 5,000 applicants. The implants are designed for people with retinal diseases such as macular ...

Potential treatments for neurofibromatosis

Neurofibromatosis can leave its patients miserable and debilitated with chronic itching or pain from disfiguring tumors. Infants affected by the disease face possible paralysis or damage to the brain and other organs. The disease frustrates doctors because there's no effective...

Variation in women's X chromosomes may explain differences among individuals, between sexes

...the second X chromosome, Willard said, in order to leave both sexes with the same activity level, or dosage, of the genes encoded by the X chromosome. Scientists had also implicitly assumed that the X chromosomes in all women would be identical. Earlier work of Willard and others shattered the first assum...

Rare surgery performed to remove pancreas, prevent diabetes

...t, such surgery might eliminate the pain but would leave the patient with severe, poorly-controlled diabetes, since the insulin-producing islets of Langerhans would necessarily be discarded along with the rest of the organ. Patients without functioning islet cells have to take insulin for life. Retrieving ...

Genetic defects give the immune system the green light to attack the pancreas

...tem was broken. The T-cells were alive and able to leave the thymus and attack beta cells. Now that the chromosomal regions are known, the researchers are seeking the precise genes involved. “Once these genes are identified, we will be better able to define the biologic pathways that lead to type 1 diabet...

Technique may allow cancer patients to freeze eggs, preserving fertility before starting treatment

... cause damage to a woman's reproductive system and leave her unable to have children afterward. Some women may regain their reproductive function after their treatment ends and may be able to conceive on their own, while others will become infertile. Egg cryopreservation could be insurance for those women ...

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

...We expected them to clump up into tight groups and leave the area, and that's in fact what they did. But si...was played back, they tended to clump together and leave the water hole sooner. But what's really interesting is that the unfamiliar anti-predator call from ...

UCLA scientists store materials in cells natural vaults

...e tiny, scientists often aim to safely deliver and leave material in the human body without causing harm. A big challenge is how to design a package for this biomaterial that will be compatible with living cells and will not provoke an immune reaction. Previous efforts have relied upon viruses or artificia...

Gladstone investigators discover how resting T cells avoid HIV infection

...al drugs that block the action of Vif, which would leave A3G poised and able to unleash its antiviral effect from inside viral particles. In resting T cells, though, HIV is defenseless against A3G, because there is no Vif in the incoming viral particles and the virus has not advanced far enough into its li...

Molecular fossils uncover link between viruses and the immune system

...as virus sequences diverge rapidly and they do not leave behind physical fossils due to their small size, these methods could not be used in studies of the evolution of viruses. ...

Discovery clarifies role of peptide in biological clock

...dule, these mice looked normal, but as soon as you leave off the lights, they reveal their internal de-synchrony," he said. "The mice showed multiple rhythms, getting up both earlier and earlier and later and later on subsequent days so that their daily activity patterns were splitting apart." Herzog and ...

Alarm pheromone causes aphids to sprout wings

...causes pea aphids to produce winged offspring that leave their host plant when mature. Because some plants can also release (E)-â-farnesene, they could in theory manipulate aphids into flying away. However, aphids were shown to react mainly to the frequency of pheromone release and not the actual quantity...

Asymptomatic HIV babies could use earlier treatment

...rrent guidelines for treating HIV-infected infants leave the decision of when to begin treatment to the child’s physician—in part because the long-term effects of ongoing antiretroviral treatment are not known. Concerns about the drugs?possible toxic side-effects and the development of viral resistance to ...

Motor transport in bio-nano systems

...hem. Second, in contrast to our cars, which cannot leave the highway when they are caught in a jam, the mol...be avoided, to a large extent, provided the motors leave the filament sufficiently fast after they have reached its 'plus' end. However, both types of system...

New tool reveals secrets of migrating cells

...nderers into purposeful beeliners that immediately leave the cortex for the interior medulla of the thymus. "We're now at the point with this technology that we can begin to look at the movement of signaling molecules within the cells," she said. Robey, with another colleague, Philippe Bousso, last year ...

Bumblebees copy one another when contending with unfamiliar flowers

...rrence because the small scent marks that foragers leave after emptying flowers dissuade others from visiting. In the new study, the researchers offered bumblebees the choice between several artificial-flower clusters in a laboratory setting. The bees preferred to feed from clusters where another bee was ...

Why are coyotes getting more aggressive?

... a coyote. # Keep pets under control and do not to leave them out at night. Coyotes may kill or injure a pet, especially small dogs and cats. Walk dogs on leashes and accompany pets outdoors, especially at night. Provide secure shelters for poultry, rabbits and other vulnerable animals. # Keep trash secure...

Siberian tigers hang tough

...ary of people, and seldom seen, tigers nonetheless leave evidence of their presence with their massive footprints in the snow. With some workers spending months in the field and covering over 21,000 km (13,000 miles) of transects by foot, ski, snowmobile, and car, over 4,100 tracks were recorded, most repr...

1 2 3 4 5 6