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Tag: "retained" at biology news

Research on Worms Yields Clues on Aging

...to treat epilepsy inhumans, worms lived longer and retained youthful functions longer thannormal.Because the drugs affect nerve signals, the researchers' observationssuggest that the nervous system influences aging processes. Thefindings are reported in the January 14 issue of the journal Science. Theanti-ag...

The BIOS Initiative - open source biotechnology is born

...gm that ensures that they are improved, shared and retained as a public resource." Today also sees the launch of BioForge (www.bioforge.net), an online collaborative research platform for biological innovation, developed in partnership with CollabNet Inc (www.collab.net). In the tradition of open source soft...

Grasping metaphors: UC San Diego research ties brain area to figures of speech

... maintain the flow of normal conversation and even retained the ability to correctly diagnose descriptions of symptoms, got all 20 of the 20 proverbs he was tested on wrong. Prodded on "all that glitters is not gold," he finally said that it meant you had to be very careful when buying jewelry because you mig...

Man-made wetland's effectiveness similar to natural marsh

...y 40 percent and phosphorus by 59 percent. It also retained these nutrients during periods of high precipitation, such as during storms and torrential downpours, which saturated the ground. "It's encouraging that this wetland acted as an effective sink, even when runoff from fertilized fields was especially ...

Mouse with designer liver has enhanced glucose tolerance, insulin response

...levels and lower levels of serum insulin. The mice retained triglycerides in the liver with a commensurate decrease of circulating triglycerides in the bloodstream. Insulin response to glucose load was diminished in LGKO mice, thus glucose tolerance in the liver was significantly improved in the absence of Ga...

Characterizing Skin Cancer by Microarrays

...sk of metastasis. However, some metastatic tumors retained a gene expression pattern characteristic of the radial growth phase, which implies that both radial and vertical melanomas can metastasize. The authors identified over 2,000 genes that distinguished the stages of melanoma progression. The authors sa...

New type of rejection blocker protects kidneys after transplant

...versed, and study results showed that all patients retained their transplanted kidneys except for one in the intensive belatacept group and one in the cyclosporine group. After 12 months of post-transplant treatment, the researchers used glomular filtration rate (GFR) -- a measure of the kidney's ability to ...

Modification of program enables prediction of gene transcription

...e segments of the mRNA are then discarded, and the retained segments are spliced together. Geneticists have traditionally assumed that transcription starts within a few hundred bases of the protein-coding region. However, for nearly 40 percent of known human genes, transcription starts long before the beginni...

Stem cells bring fast direct improvement, without differentiation, in acute renal failure

...o test that MSC subsequently used in these studies retained their phenotype after being cultured, the researchers routinely tested whether their characteristic potential to differentiate into fat and bone cells was preserved. The researchers conceded that it "is surprising that the very transient presence of...

The earliest animals had human-like genes

...Biology Laboratory (EMBL), is that our species has retained characteristics of a very ancient ancestor that have been lost in more quickly-evolving animals. This overturns a commonly-held view of the nature of genes in the first animals. The work appears in the current issue of the journal Science. Genes hol...

NIAID researchers show how promising TB drug works

...stigators screened for PA-824-resistant M. tb that retained sensitivity to a close relative of PA-824. Within this subgroup of PA-824-resistant bacteria, the team identified those mutant strains with FGD1 and F420. The investigators reasoned that resistance to PA-824 in mutants possessing FGD1 and F420 must b...

Why Christmas trees are not extinct

... plants evolved at least 146 million years ago and retained inefficient valves that first appeared some 400 million years ago in ferns, cycads and other primitive plants. But flowering plants evolved longer conduits to get around the problem. "The evolution of the specialized valve and the specialized condu...

Geoscientists follow arsenic from chicken feed to streambeds

...nic are transported to streambeds instead of being retained by the aquifers, Schreiber said. "We think that the arsenic is adsorbed onto nanoscale particles that pass though our filters and through the soil column," said Schreiber. "This suggests that particle transport is an important mechanism in arsenic cy...

New class of antibiotics effective against drug-resistant bacteria discovered in fungi

...nic are transported to streambeds instead of being retained by the aquifers, Schreiber said. "We think that the arsenic is adsorbed onto nanoscale particles that pass though our filters and through the soil column," said Schreiber. "This suggests that particle transport is an important mechanism in arsenic cy...

Polymer gel can block toxic leakage problem in gene therapy

...rticles were transported to other organs than were retained within the tumors. And most of the errant viruses ended up in the liver, where the gene therapy protein products could cause cell death. Moreover, most viruses escaped from their intended tumor targets during the first 10 minutes. Prompted by report...

Missing fossil link 'Dallasaurus' found

...Bell's research is the revelation that Dallasaurus retained complete limbs, hands and feet suitable for walking on land, whereas later mosasaurs evolved their limbs into flippers. "This is pretty close to the beginning of the mosasaur family tree," says Dallas Museum of Natural History Earth Sciences Curato...

USC researchers track down the stem cells that create feathers

...n-radioactive label that was then incorporated and retained only in the putative epithelial stem cells. They showed that these cells were pluripotent-retaining the ability to differentiate into many different cell types-by taking the purported stem cells from quail-feather follicles and transplanting them int...

Human trial proves ricin vaccine safe, induces neutralizing antibodies; further tests planned

...e ricin toxin used to make RiVax was non-toxic but retained the capacity to elicit immunity. Ricin, which can be administered in food and water or sprayed as an aerosol, is extracted from castor beans. There is currently no approved vaccine to prevent ricin poisoning in humans, and the biological agent has...

Researchers unlock how cells determine their functions

...abithorax (Ubx). Non-coding RNA is produced by and retained at the TREs of Ubx, and helps activate the expression of the Ubx gene by attracting Ash1 to the TREs. The transgenic transcription of non-coding TRE RNA can change the type and function of cells. "As a result, we can now use non-coding RNAs as tools...

Newly identified mechanism helps explain why people of African descent are more vulnerable to TB

...ns of molecules found on pathogens, which has been retained in evolution from fruit flies to humans. A set of receptors on macrophages in humans called Toll-like receptors contribute to innate immune responses. The researchers describe a novel pathway used by human macrophages that may be critical to resistin...

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