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Tag: "involves" at biology news

New egg freezing technique offers hope to hundreds of women

...r clinic using fresh oocytes." The Cryotop method involves very rapid freezing in a tiny amount (less than 0.1 microlitres) of a special vitrification solution, before storing in liquid nitrogen. This process prevents ice crystals forming, which do so much damage to the structure of the egg. Dr Kuwayama froz...

Researchers seek to solve mystery of natural HIV control

...t taking HIV antiviral medications. Participation involves having a single blood sample taken, which can be done by participants' local healthcare providers. Those located near a participating research center may choose to be followed over time and provide additional blood samples. "So far we have enrol...

Slow-frozen people? Latest research supports possibility of cyropreservation

...scientific society. In medicine, cryopreservation involves preserving organs and tissues for transplantation or other uses. Only certain kinds of cells and tissues, including sperm and embryos, currently can be frozen and successfully rewarmed. A major problem hindering wider use of cyropreservation is forma...

Mouse mimics chronic leukemia, will aid drug development

.... Human CLL is also a cancer of B cells, but it involves many chromosome and gene changes. Byrd and his laboratory are currently investigating whether human CLL cells also have high TCL-1 levels. In this study, Byrd and his research team followed the development of the CLL-like disease in the mouse stra...

New approach to vaccine development provides potent, long-lasting immunity

... our work is the first to show that motor learning involves different time scales and implies that the best strategy in rehabilitating a stroke patient should focus on slow learning because slow-learned motor skills will be maintained longer," says the report's senior author, Reza Shadmehr, Ph.D., a professor...

Robotic joystick reveals how brain controls movement

... our work is the first to show that motor learning involves different time scales and implies that the best strategy in rehabilitating a stroke patient should focus on slow learning because slow-learned motor skills will be maintained longer," says the report's senior author, Reza Shadmehr, Ph.D., a professor...

Bones hold the key to blood renewal

...e bone marrow response to the body's call for help involves stepping up production of osteoclasts, putting machinery that normally operates at a leisurely pace into high gear. The osteoclasts not only clear away bone, they also break up 'nurturing' substances in the niche that attract and hold the stem cells ...

Nanowire arrays can detect signals along individual neurons

... locations along a single axon. The current work involves measurement of signals only within single mammalian neurons; the researchers are now working toward monitoring signaling among larger networks of nerve cells. Lieber says the devices could also eventually be configured to measure or detect neurotrans...

Radioactive scorpion venom for fighting cancer

.... The second-sequence phase II trial at Henry Ford involves 3 patients, with a total of 54 patients across the US currently in investigational trials for the therapy. ...

Pigeons provide clue to solving common problem in heart patients

...n described as "over exuberant" tissue healing and involves the smooth muscle cells. It is not known why this happens in some people and not in others, but many scientists believe that genes are to blame, Wagner said. The researchers sought to find the answer in two breeds of pigeons ?one that is geneticall...

New device could cut chemotherapy deaths

...thod, produced at the University of Bath, England, involves using tiny fibres and beads soaked in the chemotherapy drug which are then implanted into the cancerous area in the patient's body. These fibres are bio-degradable and compatible with body tissue, which means they would not be rejected by the patien...

Tetracycline plus teeth equal gray smile

... Capehart's new tooth whitening treatment protocol involves placing the patient on a prescription dose of fluoride toothpaste for two weeks in order to minimize tooth sensitivity from the whitening solutions. Then, the patient comes in for a one-hour tooth whitening session, where the enamel is painted with t...

Proteins spur diabetic mice models to grow blood vessels, nerves

...amages both nerves and blood vessels. The therapy involves netrins, a family of proteins that promotes nerve development. In a study to be published this week in the journal Science Express, the Utah researchers and colleagues from other universities showed netrins not only accelerated blood vessel growth in...

Even fish don't swim well when they're young!

...ion A5]. The 'burst-and-coast' method of swimming involves alternating stages: the fish power forward in a 'burst' and then hold their body straight to 'coast'. Dr Müller and her colleagues might have found what it is that prevents larvae of the zebrafish from reaching top speeds: the larvae cannot maintain ...

Avian flu modeled on supercomputer, explores vaccine and isolation options for thwarting a pandemic

...tical Division. The model of disease transmission involves probabilities that any two people in a community will meet on any given day in any one of a number of settings, such as home or workplace. Thus, simulated disease transmission is more likely for two people in the same household and less likely for tw...

Vegetables inhibit growth of prostate cancer in mice with human tumors

...and transport of contaminants in the North Pacific involves processes that are still not fully understood. Concentrations of DDE (the main breakdown product of DDT) and PCBs in both black-footed and Laysan albatrosses were 130 to 360 percent higher in the samples Finkelstein collected in 2000 and 2001 than ...

Albatross study shows regional differences in ocean contamination

...and transport of contaminants in the North Pacific involves processes that are still not fully understood. Concentrations of DDE (the main breakdown product of DDT) and PCBs in both black-footed and Laysan albatrosses were 130 to 360 percent higher in the samples Finkelstein collected in 2000 and 2001 than ...

Inside rocks, implications for finding life on Mars

...ossils are biological, Schopf said. This technique involves a laser from a microscope focused on a sample; most of the laser light is scattered, but a small part gets absorbed by the fossil. Schopf is the first scientist to use this technique to analyze ancient microscopic fossils. He discovered that the com...

Is the brain wired for faces?

...he process of facial perception is complicated and involves different and widespread areas of the brain, there is much that remains unknown about how humans perform this task. "We found that faces aren't special in the way many scientists once thought," says Maximilian Riesenhuber, PhD, assistant professor ...

New organic substrate

...h more economic. Moreover, hydroponic production involves the use of inorganic substrates such as Perlite or rockwool and which, once used, have to be selectively removed from tips and rubbish dumps. On the other hand, wood fibre, as with peat, are recyclable organic substrates, i.e. after its first use it ...

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