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Tag: "marks" at biology news

NIAID Initiates Trial of Experimental Avian Flu Vaccine

...ere reported. The initiation of this vaccine trial marks a key advance in our efforts to prepare to respond to an avian flu pandemic,?adds Dr. Fauci. Sanofi pasteur, Swiftwater, PA, manufactured the trial vaccine, which is an inactivated vaccine made from an H5N1 virus isolated in Southeast Asia in 2004. ...

Molecular models advance the fight against malaria

...n, are killed by malaria annually worldwide. Today marks Africa Malaria Day, organized to promote awareness of the disease in a country where a child is killed every 30 seconds by malaria. Investigating ways to counter the mutations and sustain the efficacy of anti-malarial drugs, Trumpower and his collea...

Robot-based system developed at Carnegie Mellon detects life in Chile's Atacama desert

...ry Science Conference March 14-18 in Houston. This marks the first time a rover-based automated technology has been used to identify life in this harsh region, which serves as a test bed for technology that could be deployed in future Mars missions. "Our life detection system worked very well, and somethi...

Discovery Promises Simpler Therapy for Sickle Cell Disease

...very of nitric oxide to blood cells." The finding marks the first time that a defect in the ability of patients' red blood cells to process nitric oxide has been linked to a disease, the researchers said. The findings also raise the possibility that defective nitric oxide processing by red blood cells may...

Protein helps regulate the genes of embryonic stem cells

...ancer and other disease states that may have these marks and have not been examined but should be," Magnuson said. Another application of epigenetics is stem cell therapeutics, in which any specific tissue type could be derived from stem cells and used to replace damaged or diseased tissue. Magnuson and ...

MUHC scientists describe genetic resistance to rampant virus

...nature of their genetic resistance. "This research marks our second discovery of genetic resistance to CMV," she says. Most significantly, this new research documents an entirely new mechanism of resistance to CMV, involving the interaction between two genes. One gene flags virus-infected cells for destruc...

Marine sponge yields nanoscale secrets

...ostly remediation. Although the reported research marks an important step forward, Morse believes that the use of these biological methods to control such syntheses would be impractical on an industrial scale. The high cost of the purification of these proteins, the requirement of the proteins for a water...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...rised," Arrigo added, noting that the Nature paper marks the first time that scientists have documented a "one-to-one correspondence between an irrigation event and a massive algal bloom." Red tides and dead zones According to the researchers, artificially induced algal blooms could have major impacts on...

Researchers make surprise discovery that some neurons can transmit three signals at once

...enhanced or inhibited. The first week after birth marks a critical phase in the developing rat brain, a time period comparable to three months gestation in a human, when neurons are meticulously organizing and self-selecting to assemble into specific brain structures and neuronal networks. It has long bee...

Scientists analyze chromosomes 2 and 4

...,000 base pair stretch of DNA sequence that likely marks the precise location of the inactived centromere. That tract is characterized by a type of DNA duplication, known as alpha satellite repeats, that is a hallmark of centromeres. In addition, the tract is flanked by an unusual abundance of another type...

Bumblebees copy one another when contending with unfamiliar flowers

... the context of deterrence because the small scent marks that foragers leave after emptying flowers dissuade others from visiting. In the new study, the researchers offered bumblebees the choice between several artificial-flower clusters in a laboratory setting. The bees preferred to feed from clusters wh...

Unexpected lock and key mechanism found for the assembly of tumor blood vessels

...egrin helped in the creation of tumors "Our study marks the first time this integrin was found to play a key role in angiogenesis," said Varner. "This integrin is known to regulate the body's inflammation response, but until this study it wasn't suspected of regulating angiogenesis. It's possible that sin...

Neandertal femur suggests competition with hyenas and a shift in landscape use

...he hyenas, with some animal bones showing both cut marks from human tools and tooth marks from hyenas. Additionally, the human femur was gnawed by carnivores, probably hyenas. This shows tha...

Beauty queens urge girls not to sacrifice their bones

...tient Societies. This event, also held in Bangkok, marks the first time that such a gathering has taken place in Asia. Some 200 delegates from IOF member national osteoporosis societies in more than 50 countries are expected to attend. "It is particularly important that we are meeting in Bangkok because ...

Making plant cells work like miniature factories

...07 and could continue if the program receives good marks during a peer review scheduled for 2008. Before they can study the chemical makeup within plant cells, the team must construct new analytical instruments capable of identifying molecules in such minute quantities. "Developing the instrumentation is...

MSKCC researchers uncover structure of key protein complex in cells

...n cells. Ubiquitin acts as a chemical tattoo that marks damaged or obsolete proteins for destruction by a ...ent runaway cell growth. In normal cells ubiquitin marks p53 for destruction. But in cells with damaged DNA, p53 evades getting tagged with ubiquitin to allo...

How fish hear and make sounds at same time

...d hear outside sounds at the same time. The study marks the first time that scientists have found a direct line of communication between the part of a vertebrate's brain that controls the vocal muscle system and the part of the ear that hears sound. The researchers believe that understanding the auditory ...

Vaginal gel may provide a new approach to HIV prevention

...e of the TIME Global Health Summit, this agreement marks the first time any pharmaceutical company has licensed an anti-HIV compound for development as a microbicide when the class of drugs is so early in development. Women make up nearly half of all people living with HIV worldwide, and 80 percent of new...

Researchers find gland that tells fruit flies when to stop growing

...nt size to survive the process," Mirth said. This marks the first time a tissue such as the prothoracic gland has been found to be a factor in size assessment, she said, and it provides a more complete picture of how an organism's growth is controlled. Mirth is lead author of the work, which is published...

Embryonic stem cells accrue genetic changes

...ies of chromosomes or parts of chromosomes, in the marks that control whether a gene is used by the cell, o... whether the cells' genetic material had shifts in marks that sit on genes and are passed from cell to cell during cell division. These so-called epigenetic ...

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