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Tag: "mapped" at biology news

Man and mouse share genome structures

...of the proteins that package DNA, researchers have mapped a family of switches that turn genes on and off. T... interpret the resulting data. In most cases, the mapped tags coincided with the transcription starting points of active genes, as they and others had seen e...

Found: Missing sequence of the human Y chromosome

.... Rappold and colleagues had previously physically mapped theGCY locus, which is thought to be the genetic d...th theundifferentiated gonad, has been genetically mapped to the region.Because the "missing" sequence described in this study contained eightputatively activ...

New imaging method gives early indication if brain cancer therapy is effective, U-M study shows

...usion, or movement, of water through the brain and mapped the changes in diffusion from the start of therapy to three weeks later. The tumor cells block the flow of water, so as those cells die, water diffusion changes. In the study of 20 people with malignant brain tumors, the researchers found that any c...

Family trees of ancient bacteria reveal evolutionary moves

...-walled cell occurring at intervals?were coded and mapped on the tree. The distribution of traits was compared with those found in the fossil record. Cyanobacteria emerging some two billion years ago were becoming complex microbes that had larger cell diameters than earlier groups ?at least 2.5 microns. Bl...

New insight into regulation of blood stem cells

... genetics to identify the causative gene. One line mapped to a mutation in the gene c-Myb, which has a known role in regulation of blood formation. Interestingly, they found that c-Myb is not required for every step of hematopoiesis or for every type of blood cell. Instead, c-Myb is critical for very disti...

Navigating an integrated yeast network

Scientists have for the first time mapped multiple complex biological interactions in a yeast cell in a simple graphical form, enhancing our understanding of how the networks of interaction by which components of a cell influence one another. New research published in the Open Access journal...

Global analysis of membrane proteins

... work. Scientists at Stockholm University have now mapped out nearly all of the membrane proteins in the enteric bacterium Escherichia coli. Their study is published this week in Science magazine. The team, led by professor Gunnar von Heijne at the Department of Biochemistry and Biophysics, has used a comb...

Decoding the logic of olfaction

...is some logic to the way that information is being mapped onto the cortex," said Buck. "We don't know what that logic is, but it seems as if it has something to do with the molecular features of the odorant." The researchers also found, however, that only a small fraction of neurons from the olfactory cort...

Genpathway and Baylor College of Medicine Identify New Genes in Breast Cancer

...is some logic to the way that information is being mapped onto the cortex," said Buck. "We don't know what that logic is, but it seems as if it has something to do with the molecular features of the odorant." The researchers also found, however, that only a small fraction of neurons from the olfactory cort...

Maine Researchers Find Exceptions to Old Rules of Genetic Inheritance

...transmission ratio distortion and sterility always mapped to the same regions within the t haplotype. To test this hypothesis, the Maine researchers closed in on a region of the t haplotype known to be involved in these phenomena. They used this information to develop transgenic mice that carried the candi...

U of T researchers map role of Epstein-Barr virus in cancer

Researchers at the University of Toronto have mapped the molecular details that show how a viral protein coded in the Epstein-Barr virus immortalizes cells and causes them to continuously grow, thereby predisposing people to certain types of cancer. "Epstein-Barr virus (EBV) is one of the most common ...

Deep sea algae connect ancient climate, carbon dioxide and vegetation

... Geology and Geophysics at Yale and his colleagues mapped the first detailed history of atmospheric carbon dioxide between 45 - 25 million years ago based on stable isotopes of carbon in a National Science Foundation study reported in Science Express. "Through the energy we consume, each of us makes a cont...

Invasive parasite destroying fish species

... Geology and Geophysics at Yale and his colleagues mapped the first detailed history of atmospheric carbon dioxide between 45 - 25 million years ago based on stable isotopes of carbon in a National Science Foundation study reported in Science Express. "Through the energy we consume, each of us makes a cont...

Stem cells grown in lab mirror normal developmental steps

... Geology and Geophysics at Yale and his colleagues mapped the first detailed history of atmospheric carbon dioxide between 45 - 25 million years ago based on stable isotopes of carbon in a National Science Foundation study reported in Science Express. "Through the energy we consume, each of us makes a cont...

Biologists determine genetic blueprint of social amoeba

... six chromosomes of Dictyostelium. The scientists mapped the location of several hundred genes on those chromosomes based on landmarks that had been discovered over the years, then created a set of 5,000 large DNA clones, each about 200,000 nucleotide bases long, that proved useful for other researchers in...

Snapin: A protein with therapy potential for autism

...hope is in ten years, we will have a whole pathway mapped out so that we can target different points in the pathway with new drugs." ...

Scientists focus on 'dwarf eye'

...tion in humans." The research team successfully mapped the MFRP gene mutation in humans and discovered that the protein was completely missing from nanophthalmos patients. In a normal human eye, the MFRP protein is located on the surface of the retinal pigment epithelium (RPE), which is located beneath ...

Gambling monkeys give insight into neural machinery of risk

...l machinery of risk, they do not believe they have mapped the entire circuitry. "We don't think the posterior cingulate cortex is by any means the only area that's important for assessing risk, for deciding what's valuable and for actually making a choice based on that valuation," said Platt. "We think tha...

Neurologix announces positive results of gene therapy clinical trial in Parkinson's disease

...ic nucleus (STN) region of the brain. The STN was mapped using microelectrodes by recording from single neurons as the electrode was slowly moved towards the STN. Once a signature firing pattern was obtained confirming that the electrode was in the STN, the fine-wire electrode was removed, leaving only th...

NYU biologists map out early stages of embryo formation

...e Max Planck Institute, and Cenix Biosciences, has mapped out a preliminary molecular diagram of the early stages of embryo formation, offering for the first time a global look at how a single cell begins its path into a multi-cellular organism. The findings are reported in the August 11 issue of the journa...

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