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Tag: "transforms" at biology news

Studies to find better ways to preserve human eggs, ovarian tissue under way

...s, to a more rapid method of cryopreservation that transforms tissues into durable glass-like structures. Phase I trials under way at the Medical College of Georgia are comparing the two approaches in human ovarian tissue and eggs, or oocytes, as well as human-like cow ovarian tissue and eggs. They start ...

Protein enables discovery of quantum effect in photosynthesis

... energy from light in a cascade. Photosynthesis transforms light, carbon dioxide and water into chemical energy in plants and some bacteria. The wavelike characteristic of this energy transfer process can explain its extreme efficiency, in that vast areas of phase space can be sampled effectively to find the...

Scientists unravel clue in cortisol production

...od; CYP 17, along with a battery of other enzymes, transforms cholesterol into cortisol. But what isn't understood is how this protein binding creates CYP 17, or which proteins are important. So, graduate students Eric Dammer and Adam Leon, along with Marion Sewer, assistant professor in Georgia Tech's School o...

Ferns provide model for tiny motors powered by evaporation

...," said Maharbiz, meaning that the fern sporangium transforms one form of energy, in this case heat via the evaporation of water, into motion. When the cells in the outer wall of the sporangium were water logged, the sporangium remained closed like a fist, storing the spores safely inside. But when the water in...

Mapping the protein world

...er the NIH grant have been implemented." ARP/wARP transforms 'electron density maps', produced in experiments that bombard protein crystals with X-rays, into 3-dimensional structures. "X-ray experiments result in 'diffraction patterns' that can't be interpreted using our eyes," Lamzin says. "These have to be r...

Stimulation of the semicircular canals can artificially control human walking and balance

...he movements we make when looking around, and then transforms the remaining signal into two components. One component is used to control steering, and the other to control balance. In a more practical view, this ability to produce illusions of movement, and then steer and balance the body by external control, l...

Study finds how organs monitor themselves during early development

...re what she calls "a black hole": the process that transforms an embryonic ovary into an adult one. As the painstaking experiments reveal, the two cell types that interact in a feedback loop through a signaling pathway are 1) primordial germ cells and 2) intermingled cells, which are neighboring somatic cell...

A case of mistaken molecular identity

...lses sent to the brain. "Rhodopsin takes light and transforms it ?that's its function," said Levin. To demonstrate molecular mimicry in the retina, Paveto extracted rhodopsin from cow's eyes. Through a series of tests, the team showed that cow rhodopsin, which is similar to the human protein, reacts with anti...

Gene needed for butterfly transformation also key for insects like grasshoppers

...hout nymphal life, then disappears when the insect transforms to an adult." ...

Microbes convert 'Styrofoam? into biodegradable plastic

...nd and Germany, utilized pyrolysis, a process that transforms materials by heating them in the absence of oxygen, to convert polystyrene ?the key component of many disposable products ?into styrene oil. The researchers then supplied this oil to P. putida, a bacterium that can feed on styrene, which converted th...

Wisconsin scientists discover a master key to microbes' pathogenic lifestyles

...ther animal, it kick starts a genetic program that transforms the fungi into pathogenic yeasts. "This is a global regulator that sends signals down a molecular chain of command and governs a series of vital genetic programs," Klein explains. "It leads to changes in the organism's metabolism, cell shape, cell w...

Finding the mind's eye

...his on-going investigation of the brain and how it transforms visual stimuli into conscious experience. His paper, "Visibility, visual awareness, and visual masking of simple unattended targets are confined to areas in the occipital cortex beyond human V1/V2," is available in the Nov. 8 issue of the weekly jou...

NIAID researchers show how promising TB drug works

...pinpoint the precise protein that binds PA-824 and transforms it into a lethal molecule for TB. The scientists approached the problem indirectly by searching for M. tb mutants that resisted the killing power of PA-824. The team confirmed previous research suggesting that resistance usually occurs when M. tb la...

US/African project deciphers deadly parasite genome

...sts better understand how the parasite malignantly transforms cattle white blood cells into cancer-like cells th..., which causes tropical theileriosis in cattle and transforms macrophages, monocytes and B-lymphocytes. That study was led by scientists at the Wellcome Trust San...

Embryonic Stem Cells Treated With Growth Factor Reverse Hemophilia In Mice: UNC Researchers

...nal without apparent immunological rejection. This transforms them into possible candidates for cellular transplantation into the liver." Along with Fair, Cairns, Smithies and Frelinger, co-authors from the department of surgery are Dr. Michael A. LaPaglia, Dr. Montserrat Caballero, Dr. Anthony A. Meyer (chair...

Gene keeps neural cells on correct developmental path

... protein directs the complex network of genes that transforms an embryonic stem cell into a mature nerve cell, say Howard Hughes Medical Institute (HHMI) researchers. This new study, published in the May 20, 2005, issue of the journal Cell, may be among the first to track a set of genes from stem cell to diffe...

Defensins neutralize anthrax toxin

... findings demonstrate a new mechanism by which EBV transforms human B cells from the immune system into cancerous cells, which can lead to development of B-cell lymphomas. Erle S. Robertson, PhD, Associate Professor of Microbiology and Director of Tumor Virology, with Penn's Abramson Cancer Center and MD/PhD s...

Epstein-Barr virus protein crucial to its role in blood cancers

... findings demonstrate a new mechanism by which EBV transforms human B cells from the immune system into cancerous cells, which can lead to development of B-cell lymphomas. Erle S. Robertson, PhD, Associate Professor of Microbiology and Director of Tumor Virology, with Penn's Abramson Cancer Center and MD/PhD s...

Viral DNA sequence a possible trigger for breast cancer

... show that expression of Env in mouse breast cells transforms them. This study puts the spotlight on a potential new mechanism for virus-induced breast cell transformation, which has largely been attributed to the integration of viral DNA into locations that trigger the expression of host cancer-causing genes. ...

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