Tag: "arms" at biology news

New 'bumpy' jelly found in deep sea

...art-like bumps of stinging cells cover the feeding arms and bell of a newly described deep-sea jelly, publ...ly the nickname "bumpy" because it's bell and oral arms are covered with small bumps, which are actually clusters of stinging cells that the jelly uses to c...

Researchers find key gene in production of egg and sperm

...red chromosomes break at a random spot along their arms and switch pieces. Recombination is the critical process that mixes genes from the father and mother to create genetic variation in offspring. "The process of meiotic recombination involves a purposeful generation and repair of breaks in the DNA by ...

Ebola virus-like particles prevent lethal Ebola virus infection

... VLPs were injected into mice, they activated both arms of the immune response. Specifically, they induced cell-mediated immunity via T cells and humoral immunity via B cells. Both are necessary for complete protection against the Ebola virus. Having shown that the VLPs evoked a robust immune response...

How lice and bird feathers stick together

...study suggests that birds and lice co-evolve in an arms race over time, with lice changing size as birds, their beaks and feathers also change size," Clayton says. A copy of this embargoed news release and a downloadable, high-resolution photo to illustrate this story will be available after 9 a.m. MST We...

Smallpox in Europe selected for genetic mutation that confers resistance to HIV infection

...e potential to exert strong selection. There is an arms race between the host to resist and clear infection and the pathogen to evade the resistance. That leads hosts to develop polymorphisms, and then the pathogen to respond by evolving its own polymorphisms, and so on - there is a constant battle."...

Nerve disorder in mice and men linked to mutated gene

...r no control over posture or coordination of their arms and legs. "Because these disorders are so rare, it is difficult to collect DNA samples from enough affected individuals in different families with the same disorder to pinpoint the mutations that cause them," Burmeiser says. "Unless we can identify ...

Research grants program closing

... the immune system, developed prototype artificial arms controlled by thought waves, produced the most sensitive PET scanners, and have been on the forefront of cutting-edge research in cellular, molecular, and tissue engineering. "The legacy of the Biomedical Engineering Research Grants Program will be a...

Chronic pain: treatment, rehabilitation, and quality of life

...Functional Electrical Therapy (FET) on the paretic arms of volunteers with acute hemiplegia caused by strokes. FET is an exercise program integrating voluntary arm manipulation and joint electrical stimulation of forearm and muscles that control hand functions. Twenty-eight acute hemiplegic subjects parti...

UVa scientists detail salmonella protein

...lled SipA invades healthy human cells by using two arms in a "stapling" action, according to scientists at... able to control the host actin filaments by using arms to do it. It has actually evolved, we believe, to mimic human proteins that bind to actin. This allo...

Salmonella uses molecular staples to change structure of infected cells

...ar staple, with a rounded middle and two extending arms that project from either side of the molecule. The...ipA molecule binds to actin and positions the long arms so that they reach about and tether together more distant actin molecules, holding the filament toge...

Abnormally high number of Lou Gehrig's disease cases identified among Gulf War veterans

...and spinal cord, leading to muscle weakness in the arms and legs and difficulty speaking, swallowing and breathing, and eventually loss of all muscle function. It affects about 30,000 Americans, and is most commonly associated with baseball Hall of Fame member Lou Gehrig, who retired in 1939after being di...

Portrait of a doomed Sea

...seen in the otherwise whitish zone between the two arms of the Large Aral Sea was once Vozrozhdeniye ('Rebirth') Island, the isolated site of biological warfare experimentation during the Cold War, now joined to the mainland and freely accessible by foot. In reaction to this development, a US-led internat...

Sleep disorders linked to faulty brain chemistry, study finds

...eye movement, or REM, phase of sleep, moving their arms and legs, getting out of bed, talking and shouting, and even hitting or punching. RBD can endanger the sleeping person, or his or her bed partner, "Usually, while we sleep, our brains keep our hearts and lungs going automatically -- while disabling ...

Towards an AIDS vaccine: unusual antibody that targets HIV described by scientists at TSRI

...rdinary antibodies. "The Fab [antigen recognition] arms are interlocked," says Burton. "That is a unique arrangement, and it is good for recognizing a cluster of shapes like sugars on a virus." The 2G12 antibody forms an unusual "dimer" interface where two antibodies create an unusual multivalent binding...

Researchers discover use of novel mechanism preserves Y chromosome genes

...d, the Y appears to exchange genes between the two arms that make up the chromosome itself. This phenomenon, called gene conversion the non-reciprocal transfer of genetic information from one DNA molecule to another -- has been previously observed on a small scale over long evolutionary timescales betwee...

Rumors of male chromosomes demise greatly exaggerated, study finds

...ing process involved delicately unwrapping the two arms on each of the eight palindromes the scientists discovered, and analyzing the near-identical gene sequences inside. "Most chromosomes are like a typical thousand-piece jigsaw puzzle a pretty picture split into pieces with easily identifiable markin...

Gene clustering helps rice plants fight pathogens

...ving battle between rice and pathogens "a constant arms race." "Pathogens mutate to bypass resistance mechanisms, while the host, rice, recombines various components in resistance genes so it can again recognize pathogens. These resistance genes are like generals in a battle who recognize what's going on ...

Antibody coated stent a breakthrough in cardiovascular treatment

...ate the need to use arteries from patients legs or arms for bypass surgery grafts. This would reduce surgery and anesthesia times which in turn will reduce coronary surgery deaths. According to the Heart and Stroke Foundation of Canada cardiovascular disease accounted for 78,942 Canadian deaths in 1999 wi...

The structure behind the switch

... Y. The region at the end of each of the two short arms houses the receptors that recognize and bind with a specific foreign object, or antigen. These receptors are created via a well-described cutting-and-splicing mechanism that occurs within the nuclear DNA of B cells, which are key components of the im...

New findings help explain the dynamics between the dominant and non-dominant arm

...ith the way the brain obtains information from the arms as it does from the observations of ancient scribes. Background Most individuals are either left- or right-handed. How the skills they have learned from the dominant arm (or hand) are transferred to the non-dominant arm have long intrigued physio...

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(Date:4/17/2014)... targets that could be used to provide relief ... London made the discovery when researching how pain ... body. , Dr Marzia Malcangio said: "We have ... and our findings could help chemotherapy patients who ... side effect of some chemotherapy drugs (such as ...
(Date:4/17/2014)... the April issue of Experimental Biology and ... Drs. Rex Gaskins and Paul Kenis in the ... of the University of Illinois Urbana-Champaign describe their ... reactions underlie a variety of cell functions including ... these crucial roles in regulating normal cellular behavior, ...
(Date:4/17/2014)... review published in the April issue of Immunity ... Institute for Medical Research, says it,s time to take ... to treating sepsis, which kills millions worldwide every ... when molecules released into the bloodstream to fight an ... is necessary for maintaining good health without inflammation, ...
(Date:4/17/2014)... 2014U.S. military personnel who served in Iraq and ... brain injury (TBI) were compared to military personnel ... reasons. Differences in measures of overall disability, cognitive ... injury are reported in an article in ... Mary Ann Liebert, Inc., publishers. The article is ...
(Date:4/17/2014)... (April 16, 2014) The cause of neuronal death ... study proposes that neurons may be mistaken for foreign ... similar to the way autoimmune diseases like type I ... cells. The study was published April 16, 2014, in ... and likely controversial, idea in Parkinson,s disease; but if ...
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