Tag: "weeks" at biology news
Scientists solve 30-year-old mystery of mutant mouse's kidney woes
...ped enlarged bellies and died within three to four weeks
of their birth. Scientists initially assumed that the mutation was causing a form of polycystic kidney disease, but a follow-up study more than a decade later showed that passage of urine from the kidney was blocked, and the condition was renamed con...
MRSA vaccine shows promise in mouse study
...umans. The researchers vaccinated 50 mice. Three weeks
later, they injected groups of 10 with potentially lethal doses of one of five different clinical isolates. The vaccine completely protected mice against two strains--including the virulent community-associated strain--and offered significant prot...
Study challenges myth that sex late in pregnancy hastens birth
...at engaging in sexual intercourse during the final weeks
of pregnancy can hasten labor and delivery. In fa... Women who were sexually active in the final three weeks
of their pregnancies carried their babies an average of 39.9 weeks, compared to average delivery at ...
Important gene controlling tree growth and development found
...plar trees can be stimulated to flower after a few weeks
instead of after the normal 10-15 years. The scientists also show that the same gene not only controls the flowering time of trees, but also the timing of when the trees stop growing and set bud in the fall. That the same gene was involved in all th...
Study provides first look at the 'birth' of a retina cell
...whereas in humans this time period is four to five weeks
during gestation. The Swaroop research team also confirmed that when NRL is absent, a rod precursor will change its course and acquire the identity of a cone. "This finding in particular implies the existence of pools of progenitor cells with compe...
US infant mortality rate fails to improve
...s occurring to babies born premature (less than 37 weeks
gestation) or with a low birthweight (less than 25... the March of Dimes. Babies born at less than 28 weeks
gestation accounted for less than 1 percent (0.7 percent) all live births but nearly half (46.4 per...
Selectively blocking inflammatory signals may protect mice from MS
...ng, including mild to moderate tremors, within two weeks
of birth. Only four out of 20 mice with both high interferon levels and the SOCS1 gene had symptoms. On autopsy, mice with high interferon levels in the nervous system had severe loss of oligodendrocytes, ranging from 20 to 40 percent. Those wit...
Dopamine drug leads to new neurons and recovery of function in rat model of Parkinson's
...rcent of them appeared to be dopamine neurons by 8 weeks
after treatment. Animals treated for 8 weeks
also developed almost 75 percent of the normal number of neuronal connections with other parts of th...
New technology addresses female fertility preservation
...ertilized eggs, but the process can take up to six weeks
and for some this delay of treatment is not an option. Immature follicles (the female egg and surrounding somatic cells) can be preserved at any time but are difficult to mature when removed from their normal environment. A team of scientists from ...
AIDS vaccine research offers new insights on survival
... protection that the vaccine provides in the early weeks
following infection gives the monkeys a long-term survival advantage, and that this protection is associated with a significantly higher level of memory CD4+ cells." In another aspect of the study, Letvin and his colleagues at the VRC found that mea...
Prion find points way to test for human 'mad cow' disease
...ins during the "silent phase" of the disease--just weeks
after the animals were infected and months before they showed clinical symptoms. The scientists say that they detected prions--the infectious proteins responsible for such brain-destroying disorders as bovine spongiform encephalopathy (BSE) in cattl...
Immune system police learn early and sometimes badly
...ell schooling in the thymus peaks in the first six weeks
of life in the mouse, which roughly translates to the first 15 years of human life. Those early lessons seem to last a lifetime and the few regulatory cells that develop later will be like the early cells, says Dr. Rafal Pacholczyk, MCG immunologist ...
Researcher studies, treats military with 'silent disease'
...y not progress." The standard treatment--24 to 48 weeks
of a once-a-week injection with interferon and several pills of ribavirin each day--are what Sjogren speculated would cause a decrease in quality of the volunteers' lives. "The medications are tough to take," she said. On initial questionnaires, stu...
Arctic expedition will investigate alien-like glacier
...ctic Institute of North America plans to spend two weeks
studying a sulfur-spewing spring on the surface of an ice field not far from the North Pole this summer, after it was discovered by Institute Executive Director Dr. Benoit Beauchamp during his travels in the area. Beauchamp, U of C adjunct professor ...
Mapping the protein world
...he time necessary to create structural models from weeks
to minutes. This grant will allow the scientists to explore new concepts of model-building and enlarge the scope of data that the software can handle. ARP/wARP deals very well with high-resolution data that allows to distinguish individual atoms, b...
Federal testing for mad cow disease a failure, law review editor says
...-year-old English girl, for example, cried for two weeks
straight and then began screaming before she died. His article is titled, "Food Safety vs. Promotion of Industry: Can the USDA Protect Americans From Bovine Spongiform Encephalopathy?" ...
Dominant meerkats render rivals infertile
...ate females from the group for an average of three weeks
at a time. Evicted subordinates, typically those with whom reproductive conflict is most likely (females of breeding age, older, and pregnant females), suffer repeated attacks and chases throughout this period, leading to dramatically increased l...
Study shows pine bark naturally decreases severe chronic venous insufficiency
...he beginning of the study and after four and eight weeks
of treatment. A composite, analogue score based on...edema was made by another physician. After eight weeks
of treatment, patients who supplemented with Pycnogenol® experienced decreased ankle swellings by 35...
Natural pine bark extract relieves muscle cramp and pain in athletes and diabetics
...ffer from exercise-induced cramping. The first two weeks
of the study was an observation period and partici...h participant experienced over the two observation weeks
was recorded. Next, all the participants were given 200 mg of Pycnogenol once a day for four weeks...
Ready, set, mutate?and may the best microbe win
...e final two fought it out over the remaining three weeks
of the test. The research included a raft of additional experiments as well. The team characterized each of the mutant proteins to document precisely how it aided in metabolic regulation. The fermentor experiment was repeated and the same mutations ...
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