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Tag: "empty" at biology news

Latent memory of cells comes to life

...ted between the two new DNA double strands and the empty spaces are filled by new nucleosomes. Cell division is therefore an opportunity for changes in the nucleosomal composition of a specific DNA region. Changes can also happen during the lifetime of a cell due to chemical reactions allowing interconvers...

Navigable nanotransport

...he mini-pumpkins are linked together, they form an empty sphere with many tiny cavities on its surface. These "pockets" can be filled with certain nitrogen-containing biomolecules, such as spermine, in a very stable fashion. The Korean researchers coupled spermine to the vitamin folic acid and packed th...

Eating with our eyes: Why people eat less at unbused tables

... parties could use fresh glasses for refills while empty glasses, or even empty bottles, are left on the table. ...

Chemical switch triggers critical cell activities

...r NEDD8 then hops over from the right hand to E1's empty left hand. That leaves the right hand free to grab yet another NEDD8. By continually passing the NEDD8 proteins from the right hand to the left hand and on to E2, E1 keeps a relay of these batons flowing. In turn, that keeps the specific biochemical ...

Natural protein stops deadly human brain cancer in mice

...s with implanted glioblastoma cells. Mice that got empty beads developed large malignant tumors and died. Mice with BMP4 beads survived much longer, and 80 percent survived four months after cancer cell implants. "Our idea is to treat patients with BMP4 or something like it right after surgery to remove...

American scientist's research of life's first cells

... leads the vesicle to "steal" membrane from other, empty vesicles. This could be an example of Darwinian evolution, according to Chen. "Exploration of these minimal systems promises to lead to more exciting insights into the origins of biological complexity," she writes. Chen is currently completing medica...

Chemical tests of cell growth enter third dimension

...pecific optical effect, Yang said. The surrounding empty cells provide a darker background that lets the fl...ere is an advantage to using more wells: The eight empty wells supply nutrients to the cells in the middle well, so tests can run for up to two weeks without...

Cellular traffic backups implicated in skeletal malformations

... they reach their destination, the proteins either empty out into the extracellular space or take up residence in the cell membrane. "Protein transport and secretion is a fundamental function of every living cell, in every organism," said Knapik, associate professor of Medicine and Cell and Developmenta...

Emotional control circuit of brain's fear response discovered

...Hirsch. "For example, if someone is walking on an empty street at night and hears a loud banging sound in the near distance, the amygdala would immediately light up. But instead of always running in the opposite direction from the sound, once the source is determined, the rACC determines if action is nee...

Asia's odd-ball antelope gets collared

...ademy of Sciences "Otherwise, we will have only an empty steppe and deserts with no any saiga. Future generations will never forgive us for our carelessness."...

Mutant mice show key autism traits

...f investigating a cage holding another mouse or an empty cage--the mutant mice showed similar preference for the two. Normal mice by far prefer investigating the caged mouse. The researchers also found the mutant mice to be deficient in nest-forming and sexual and maternal behavior. In tests of their reac...

UNH researcher restoring oyster reefs to Great Bay

...er reefs are formed by live oysters atop mounds of empty shells; one initiative of Grizzle's lab is soliciting "recycled" empty shells from oyster harvesters that will eventually be returned to the bay to provide substrate. Gr...

Triple threat polymer captures and releases

...e small guest molecules was monitored from just an empty TGA pan, there was a slight difference versus thos...ule leaves the host material versus it leaving an empty pan,, she said. "Then we thought that this material could be very useful as something to promote t...

Injection may prevent infertility in men receiving cancer chemotherapy

...s of Taxol-injected mice showed severe atrophy and empty seminiferous tubules, where the sperm-producing cells are contained", said Mr. Carmely. "In contrast, we saw only minimal testicular damage in the group that had previously been injected with AS101, and we could also find mature sperm. Injection of ...

Insect predation sheds light on food web recovery after the dinosaur extinction

...em rebuilt new links from its shattered state, the empty ecological space was open to opportunism, and in a few places the food chain became unbalanced and unstable. At Castle Rock, plants flourished in the warm wet climate and without insect predatory pressure -- possibly because their rainforest-type le...

Oops! Researchers publish new findings on the brain's response to costly mistakes

...roceries, or realizing that our gas tank is nearly empty on a lonely stretch of highway, we all make mistakes that aren't just annoying, but potentially costly. Now, a team of University of Michigan researchers has looked inside the human brain and captured the instant when someone makes a costly mistake....

Potential vaccine developed for deadly leishmaniasis disease

...The delivery vehicle is an influenza virosome ?the empty envelope of the influenza virus. These flu virus shells contain none of the infectious genetic material in full-fledges flu viruses. The virosome also acts as an "adjuvant," boosting the immune response of the candidate vaccine. The antigen is a synt...

World's pledge to halve hunger by 2015 looks like empty promise

...lf by 2015. That commitment is now looking like an empty promise -- all talk and no action -- according to a Cornell University expert on world hunger. If business proceeds as usual, just as many people will be hungry in the world -- 800 million -- in 2015 as there were 16 years ago, said Per Pinstrup-And...

Learning and memory stimulated by gut hormone

... and further suggests that we may learn best on an empty stomach. Published in the February 19 online issue of Nature Neuroscience by investigators at Yale and other institutes, the study showed that the hormone ghrelin, produced in the stomach and previously associated with growth hormone release and app...

Pulp mill devastates swans' sanctuary in Chile

... within the space of just months, it has become an empty expanse of brown, polluted water. It is a water desert. Words really can't describe the magnitude of the disaster here." The investigators, who made two visits to the area, in August and October, affirmed earlier findings by the Austral University o...

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