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Tag: "duplicate" at biology news

For first time, brain cells generated in a dish

...ttempt neurogenesis have been unable to so closely duplicate the natural process. They also haven't allowed scientists to monitor the entire sequence of cell development from primitive states to functional neurons and expose the electrophysiological properties of the cells. A little more than a decade ago, sc...

Researchers pioneer new gene therapy technique using natural repair process

...one each from the mother and father) and they must duplicate these during cell division so that the subsequent cells will also have two each. The wounded chromosome takes advantage of the healthy copies created in preparation for division, and uses them as a template to repair the break in the DNA strands. In...

While on trail of dioxin, scientists pinpoint cancer target of green tea

... It turns out that those researchers are trying to duplicate what green tea does naturally. Gasiewicz says drug makers can learn from green tea, which might modulate HSP-90 in a way that researchers haven't seen before. Gasiewicz is a world leader on dioxin, and it was by tracking the trail of dioxin's harmfu...

Marine sponge yields nanoscale secrets

...pling small, inexpensive synthetic molecules (that duplicate those found at the active center of the bio-catalyst of the marine sponge) onto the surfaces of gold nanoparticles. They showed that when two populations of these chemically modified nanoparticles, each bearing half of the catalytic site, are brought...

Insight into DNA's 'weakest links' may yield clues to cancer biology

...ts. Retrotransposons are mobile gene segments that duplicate themselves and insert the new copies back into oth...tes said. Fragile sites in mammalian cells tend to duplicate late and also include sequences prone to forming kinks, or hairpin structures, like those observed i...

Key mechanism in genetic inheritance during cell division identified

... disassemble and reform into spindles across which duplicate sets of chromosomes line up. During this phase, it is critical that the spindles maintain their structural integrity so that they can segregate a single copy of each chromosome to each daughter cell. After which, the microtubules again disassemble an...

Purdue proves concept of using nano-materials for drug discovery

...billionths of a meter. Researchers are working to duplicate how cell membranes function on chips in order to test the potential effectiveness of new drugs to treat diseases. Membranes, which surround cells and regulate the movement of molecules into and out of the cells, contain a variety of proteins, some of...

Priming embryonic stem cells to fulfill their promise

...r cell biologists in mind so that anyof them could duplicate it with off-the-shelf chemicals andstandardized laboratory machinery. "We think other researchers couldeasily use this technique with any other tissue in mouse, or human, orany other species," said Bhatia.Scientists have identified about 100 proteins...

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