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Tag: "piece" at biology news

Wisconsin scientists grow critical nerve cells

... The hunch paid off and turned out to be the final piece of the puzzle. The discovery, says Zhang, demonstrates that human stem cells do not necessarily differentiate in linear fashion, as scientists always believed. Rather, a series of complex overlapping changes may well be the developmental norm in hig...

Termites feed through good vibrations

...here are many accounts of termites not consuming a piece of palatable wood." ### Listen to termites walking and chewing pine http://www.csiro.au/audio/termite_Feb05.mp3 Termite pictures: http://www.scienceimage.csiro.au/index.cfm?event=site.image.detail&id=2583 http://www.scienceimage.csiro.au/index...

Timing is everything: First step in protein building revealed

...tions at places other than a particularthree-block piece of RNA known as the "start codon." And excessiveamounts of eIF1 are associated with cardiac hypertrophy, or an enlargedheart.While eIF1's role in cardiac hypertrophy remains a mystery, the newdiscovery reveals exactly how eIF1 regulates the ribosome'...

Novel Therapy Tested in Mice Could Chase Away Cat Allergies

...sery in allergy sufferers. On the other end sits a piece of human antibody (called IgG Fcg1) that docks to a cell receptor that can be recruited to stop allergic reactions. The investigators named the chimeric molecule GFD, or gamma Feline domesticus, for its human and feline parts, explains principal inv...

Needling Chromosomes Reveals Cell Division Secret

...division. Her uncanny surgical skills have added a piece to thelarge and intricate puzzle of how one cell divides into two -- aprocess fundamental to all organisms.In the Dec. 14, 2004, issue of Current Biology, Leocadia Paliulis andBruce Nicklas report their progress in understanding how the pairs ofchrom...

Researchers identify target for cancer drugs

...ini lab report on discovering an important missing piece of the activation process. This missing component...m that the mTOR/rictor complex is indeed a missing piece of the puzzle. According to Sarbassov, "If we find a molecule that can block the mTOR/rictor comple...

First-ever Compounds To Target Only Metastatic Cells Are Highly Effective Against Breast, Prostate, And Colon Cancers

...ting with the basic migrastatin molecule, we cut a piece there, add a piece here," he explained, "and what we ended up with were two compounds -- core macroketone and core macr...

Discovery of key protein's shape could lead to improved bacterial pneumonia vaccine

... 90 types of pneumococcus by just addingCbpA, or a piece of CbpA.?The discovery of the structure of CbpA was atwo-step process that included studies of how this protein works,followed by determination of its actual structure using powerfullaboratory tools. Previous work by another team suggested that CbpAb...

New comparative toxicogenomics database

... 90 types of pneumococcus by just addingCbpA, or a piece of CbpA.?The discovery of the structure of CbpA was atwo-step process that included studies of how this protein works,followed by determination of its actual structure using powerfullaboratory tools. Previous work by another team suggested that CbpAb...

Scientists discover unique microbe in California's largest lake

...technically known as cyanobacteria)have acquired a piece of DNA from a proteobacterium, a distant relativethat last shared a common ancestor with cyanobacteria more than twobillion years ago.The small subunit ribosomal RNA gene is widely used by scientists toinfer the relationships among living organisms, ...

NC State scientist finds soft tissue in T. rex bones

...resent. Attempting to dissolve the minerals from a piece of fossilized bone, so the theory goes, would merely dissolve the entire fossil. But the team was surprised by what actually happened when they removed the minerals from the T. rex femur fragment. The removal process left behind stretchy bone matrix...

Nanoscale Diagnostic Sets Sights on Alzheimer's

...sured by an extremely sensitive detector. Each DNA piece greatly increases the sensitivity of the test and its potential to tell doctors a patient carries the ADDLs. According to the researchers, BCA is about 1 million times more sensitive than the next best thing ?standard enzyme-linked immunoassays (ELI...

Newly discovered pathway might help in design of cancer drugs

... "Exposing DNA to radiation is like hitting a fine piece of crystal stemware with a hammer. It shatters, and looking for a particular chemical pathway is like looking for a needle in a haystack," the chemist explained. "What we did was more like carrying out a precision attack. It let us get a closer look....

Study reveals new technique for fingerprinting environmental samples

...bbreviated sequencing effort enables scientists to piece together the information and form a useful metabolic picture of an entire complex environment. This study was done in collaboration with Diversa Corporation of San Diego, Calif. who provided the DNA from the different environments which included soi...

A puzzle piece found in unraveling the wiring of the brain

...or College of Medicine in Houston have unraveled a piece of that puzzle by finding a gene that plays a key role in brain wiring. A report on their work appears today in the journal Neuron. "We were surprised to find an exocyst mutant having such specific defects," said Bellen, professor of molecular and h...

New tumor-suppressor gene discovered

...d that the mats gene had a mutation--an additional piece of DNA that had somehow become inserted into the molecular sequence of the gene. This mutation was a type of "transposable element" known to be able to jump to different locations along the DNA. The inserted material disrupted the gene's function, wh...

Cooperation is key—a new way of looking at MicroRNA and how it controls gene expression

...es like a microRNA should be expected to bind to a piece of RNA of equal length and complementary sequence. And since these sequences of the microRNA were known, a computer search through the three billion letters of the human genome should find those matching sequences. But this didn't work. The homology...

Shutting down the HIV assembly line

...y. Disruption of the interaction, using a specific piece of the AP-3 subunit, eliminated Gag trafficking to the multivesicular body and diminished HIV particle formation in cells. "The significance of this paper comes from really identifying how Gag gets to the multivesicular body and in demonstrating tha...

Biochemists report discovery of structure of major piece of telomerase; implications for cancer

...hen cells are replicated. This is the first major piece of telomerase for which the structure is known. Te...t Craig Blois solved the structure of an essential piece of this RNA. Telomerase has been extremely difficult to characterize structurally because of its si...

Scientists discover that three overlapping signals in embryo help get the backbone right

...produced a Siamese twin embryo," Khokha said. "The piece they cut out from the donor embryo and transplanted into the host embryo was able to redefine the structures in the host embryo to make back structures where the belly would normally form - to induce another head, brain and spinal cord. The tissue th...

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