barrier 2 5

Tag: "barrier" at biology news

Stem Cells to Solve the Blood Shortage Problem?

...ntists have made post-tsunami statements about the barrier function of mangroves, most have failed to recognize that this function has never actually been investigated in detail. In their essay, the authors present an account of the first post-tsunami field assessment they've undertaken, in Sri Lanka. The r...

Could better mangrove habitats have spared lives in the 2004 tsunami?

...ntists have made post-tsunami statements about the barrier function of mangroves, most have failed to recognize that this function has never actually been investigated in detail. In their essay, the authors present an account of the first post-tsunami field assessment they've undertaken, in Sri Lanka. The r...

By creating molecular bridge, scientists change function of a protein

...ow provide one possible solution to a long-lasting barrier that is important in the protein engineering area -- that is the creation of the new protein functions," Zhao said. "Our approach is to build a bridge between the existing protein function to the target new function by adding some intermediate functi...

Immune system's distress signal tells bacteria when to strike back

...apons known as PA-I and Pyocyanin. PA-I causes the barrier cells that line the host's bowel to become more permeable, which renders them more susceptible to the microbe's toxins. Pyocyanin enhances the germ's ability to pass through the weakened bowel wall, enter the bloodstream and invade tissue. "Our goal...

UN: World in big ecological mess

...ned with extinction. * Ecosystem degradation is a barrier to achieving the MDGs. In all the four plausible futures explored, scientists project progress in eliminating hunger, but at far slower rates than needed to halve the scourge by 2015. Changes in ecosystems such as deforestation influence the abundanc...

An (ecological) origin of species for tropical reef fish

...abago. This 2000 km gap is believed to be a strong barrier for corals and associated reef organisms." "My id... find genetic differences that corresponded to the barrier in all of them, but, surprisingly, that wasn't the case." Mitochondrial DNA of adult fish and larva...

Distributed Basic Local Alignment Search Toolkit (W.ND-BLAST)

...cy of point-of-use 0.2 micron filters to provide a barrier to Legionella and other pathogens to reduce the ri...terborne microbes. The filters provide an absolute barrier between the microorganisms and patients. "Point-of-use filtration is a effective solution that can ...

New strategies to reduce hospital-aquired infections

...cy of point-of-use 0.2 micron filters to provide a barrier to Legionella and other pathogens to reduce the ri...terborne microbes. The filters provide an absolute barrier between the microorganisms and patients. "Point-of-use filtration is a effective solution that can ...

Infants with Rare Genetic Disease Saved By Cord Blood Stem Cells

... the genetic lysosomal storage diseases. The major barrier to universal newborn screening is building an infrastructure to support widespread testing, she said. The cost of testing itself would be relatively low. Although lysosomal storage diseases are rare ?fewer than 5,000 births combined out of 4 million...

Master gene controls healing of skin in fruit flies and mammals

...sue resulting from the failure of the body surface barrier to develop properly. Confirming her suspicions, th...chanisms for development and repair of the surface barrier in insects and mammals have been conserved, given the differences in the molecular composition of in...

Genetic therapy reverses nervous system damage in animal model of inherited human disease

...s with the functioning gene. Since the blood-brain barrier would block the virus carrying the gene if it were circulating in the bloodstream, the researchers injected the virus directly into the brain. "The brain of the cat is much closer in size to the human infant brain compared to mice. Thus we think tha...

New project aims to make large-scale lobster farms feasible

...cessful culture and release to the wild. The main barrier to successful commercial spiny lobster culture, which has been explored through pilot programs in various countries, has been the need to collect larvae from the wild. The lobster larval growth cycle is extremely complicated and as yet reproduction a...

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

...ear, the research team erected a 7-foot-tall cloth barrier around the perimeter of the campsite. Though no thicker than a washcloth, the light-brown tarp proved an effective deterrent against wandering herbivores and curious lions. "Large animals could easily jump over the tarp or go right through it, but I...

Infants With Rare Genetic Disease Saved by Cord Blood Stem Cells

... the genetic lysosomal storage diseases. The major barrier to universal newborn screening is building an infrastructure to support widespread testing, she said. The cost of testing itself would be relatively low. Although lysosomal storage diseases are rare ?fewer than 5,000 births combined out of 4 million...

Microbial fuel cell: High yield hydrogen source and wastewater cleaner

... cell phone -- they can leap over the fermentation barrier and convert a "dead end" fermentation product, acetic acid, into carbon dioxide and hydrogen. Logan notes, "Basically, we use the same microbial fuel cell we developed to clean wastewater and produce electricity. However, to produce hydrogen, we kee...

Fibril Shape Is The Basis Of Prion Strains And Cross-species Prion Infection

...other species, some scientists believe the species barrier was breached when a new version of Creutzfeld-Jakob disease appeared in humans after several recent epidemics of bovine spongiform encephalopathy or "mad cow" disease. Since then, barriers to the transmission of prion diseases between species "have e...

PGA on a tour under the skin

...organism becomes so pathogenic once the protective barrier of the skin is removed remains unclear. In their study appearing online on February 3 in advance of publication in the March 1 print edition of the Journal of Clinical Investigation,.Michael Otto and colleagues from Rocky Mountain Laboratories demon...

Antibiotic might fight HIV-induced neurological problems

... but most of the drugs don't cross the blood-brain barrier very well," says Christine Zink, D.V.M., Ph.D., professor of comparative medicine at the Johns Hopkins University School of Medicine. "As a result, even though the infection seems to be controlled, it may still cause damage in the brain. And because ...

Scientists rid stem cell culture of key animal cells

Tackling a pressing and controversial technical barrier in stem cell biology, scientists at the WiCell Research Institute and the University of Wisconsin-Madison have crafted a recipe that allows researchers to grow human embryonic stem cells in the absence of mouse-derived "feeder" cells, long thought to...

1 2 3 4 5