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Tag: "adult" at biology news

MWG Biotech expands siMAX?siRNA portfolio with new scales, lengths and design tools

...ticle. Then ?nine days after the egg was laid ?the adult fly crawls out of the pupal case. Fruit flies have a two-month lifespan. "Teenagers are very pupal ?they go inside their shell and withdraw," Thummel says. "Steroid hormones take over your kids, and they look very different and behave very different...

Experimental shingles vaccine proves effective in nationwide study

In one of the largest adult vaccine clinical trials ever, researchers have found that an experimental vaccine against shingles (zoster vaccine) prevented about half of cases of shingles--a painful nerve and skin infection--and dramatically reduced its severity and complications...

Elusive salamanders have role in developing new sampling models

...e the ponds as terrestrial juveniles. Juvenile and adult salamanders may move 400 or more yards from ponds and burrow in old crayfish holes and other crevices in soggy pine flatwoods. This research is important to the military because better information about the presence or absence of salamanders can hel...

Techniques available to detect soil that inhibits destructive soybean pest

...e soybean roots and suck out the nutrients. As the adult female ages, she fills with eggs, turns yellow and then brown to become the nematode cyst. At that point her body is a case to protect hundreds of eggs while they mature, hatch into juveniles and leave the cyst to further attack the plant roots. Swol...

Tiny roundworm's telomeres help scientists to tease apart different types of aging

...tiny creature, which spends the better part of its adult life without a single dividing cell in its body, s...ctively divide but stay put just like the cells in adult worms. "That makes our findings relevant for age-related decline in mental function and neurodegene...

Tissue regeneration operates differently than expected

...ers in Bad Nauheim discover the mechanism by which adult stem cells are integrated into skeletal or heart m...ow shown that skeletal muscle tissue can fuse with adult stem cells, via a mechanism based on the participation of mediators which are generally involved in ...

Emerald Spectre haunts Ontario's ash forests

... need to determine the maximum flight potential of adult borers. In Michigan, the borer was reported at 29 new sites in 2004. New infestations were also reported in Ohio and Indiana. The one bright spot in the study is the apparently successful eradication of a borer population that was introduced into ...

An essential regulator of body weight revealed

...ntial for feeding behavior. Without these neurons, adult mice stop eating and undergo rapid weight loss. ...uenced eating behavior when they were removed from adult mice. If the neurons were eliminated in newborn mice, their developing brains found a way to compens...

Prenatal exposure to famine increases risk of schizophrenia

...famine would increase the rate of schizophrenia in adult life by examining people who lived through a massive famine in China from 1959-1961. The risk of schizophrenia was examined in the Wuhu region of Anhui, one of the most affected provinces. Rates were compared among those born before, during, and afte...

Bronx Zoo bears are new Samsonite gorillas

...e popular Bear Den exhibit, home of the zoo's four adult grizzly bears. The bears attempted to open, claw, crush, and bite their way into the container. After some 30 minutes of effort, the bears lost interest, leaving the scratched but still unopened container for keepers to recover. In the Adirondack St...

Study hints at role of stem cell genes in testicular, breast cancers

... evidence already suggests, in fact, that genes in adult stem cells ?which reside in many tissues of the body ?cause some leukemias, and that they may cause gliomas, the most common form of brain tumor (UCSF - Nature, Feb. 19, 2004 ; UCSF - New England Journal of Medicine, Aug. 25, 2005). The current stud...

UF study first to quantify validity of DNA I.D. tool using marine snails

...n just sequence the caterpillar and link it to the adult butterfly." Probably the most common application, for scientists and consumers alike, would be the ability to instantly analyze the DNA of a plant or animal with a hand-held device, Meyer said. "It's very Star Treky if you can imagine McCoy having t...

Gene therapy reverses genetic mutation responsible for heart failure in muscular dystrophy

...sarcoglycan gene intravenously into 10-day-old and adult LGMD hamsters, Dr. Xiao and his colleagues found t... eight and one-half months after gene therapy. The adult hamsters also showed significant improvements in heart muscle structure. In contrast, untreated hams...

Agricultural workers at increased risk for infection with animal flu viruses

...l P. Myers, examined serum samples taken from four adult populations in Iowa between 2002 and 2004. Three populations were occupational groups exposed to pigs: 111 farmers, 97 meat processing workers and 65 veterinarians. The fourth control group included 79 volunteers from the University of Iowa with no o...

Displaced songbirds navigate in the high Arctic

...he southern United States. In the study, young and adult white-crowned sparrows were captured with mistnets...cage experiments. The scientists found that both adult and juvenile birds abruptly shifted their orientation from the migratory direction to a direction le...

PLoS Medicine publishes first trial of effect of male circumcision on HIV infection

...gh the trial shows promising protective effects of adult male circumcision in HIV acquisition, more researc...ts have more general application." Furthermore, adult circumcision carries risks, especially if performed by medical personnel or traditional healers with...

Chernobyl: The true scale of the accident

...ia among emergency workers, but not in children or adult residents of contaminated areas. A slight increase in solid cancers and possibly circulatory system diseases was noted, but needs to be evaluated further because of the possible indirect influence of such factors as smoking, alcohol, stress and unhea...

Researchers find gland that tells fruit flies when to stop growing

...rothoracic gland produces much smaller-than-normal adult fruit flies, Riddiford said. "In humans, it would be as if you reached puberty when you were 6 years old." In the research, Mirth determined the critical weight for fruit flies to begin metamorphosis, and examined when larvae with enlarged prothorac...

Regenerating worms help elucidate stem cell biology

...scientists know, is dependent on stem cells in the adult planaria known as neoblasts. Like all stem cells, ...g to explore the molecular mechanisms that control adult stem cells, so, said Sánchez Alvarado, it's too soon to know how similar these mechanism are in plan...

Past illegal blood donation in China linked to hepatitis C virus infection

...cted a survey in 2003 among a random sample of 538 adult residents from 12 former commercial plasma-donating villages in Shanxi Province. Structured questionnaires were administered and blood samples tested for HCV antibodies. HCV rates were 8% in all participants, 28% in former plasma/blood donors, and ab...

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