Tag: "internal" at biology news
MIT creates 3-D images of living cell
...mensional images of cervical cancer cells, showing internal
cell structures. They've also imaged C. elegans, a small worm, as well as several other cell types. The researchers based their technique on the same concept used to create three-dimensional CT (computed tomography) images of the human body, which...
Circadian clock controls plant growth hormone
...ects plant growth. Most plants and animals have an internal
clock that allows them to match their activities t...hope to understand exactly why having a functional internal
clock is important for plant health. ...
Sugar and spice and everything nice: Health differences in newborn girls and boys
... of blood flow, and therefore must rely in part on internal
nutrient stores to produce energy anaerobically (without oxygen). The end-products of this process (anaerobic metabolism) are lactate and hydrogen ions (H+) which can accumulate in the liver cells during ischemia leading to detrimental affects. Thu...
Weizmann Institute scientists discover a control mechanism for metastasis
...ce of changes in the cellular structure. The cells internal
skeleton an assembly of densely-packed protein fibers comes apart and the protein fibers then form thin threads on the outside of the cell membrane that push the cell away from its neighbors. In addition, a number of protein levels change: some get...
See what you're spewing as you speed along
...sor being used directly in the exhaust of a static internal
combustion engine to measure emissions, said Dr Philip Martin, one of the papers authors. The team say the components for the device are readily available and the near-IR technology allows highly accurate readings to be taken and also cuts out inte...
How cells change the pace of their steps
...d biochemical reactions, some of which remodel the internal
skeleton and others that add and remove adhesion p... A cell can assume a variety of shapes due to its internal
cytoskeleton, a network of crisscrossed protein fibers that forms an internal
skeleton in a cell. Th...
Marijuana component opens the door for virus that causes Kaposi's sarcoma
...e two proteins responsible for maintaining a cells internal
framework, or cytoskeleton. By altering the cytoskeleton, THC effectively opens the door for KSHV, allowing the virus to more easily enter and infect the cell. We can take away that effect by using antagonists that block the two cannabinoid receptors...
Forsyth scientists gain new understanding of adult stem cell regulation
...trols the left-right asymmetric positioning of the internal
organs during embryonic development. In this study, they turned to the role of gap junctional signals as regulators of adult stem cells in repair of injury. Drs. Oviedo and Levin focused on direct cell-cell transfer of small molecules and ions as c...
Aggressive therapy best for certain AML patients
...pal investigator Clara D. Bloomfield, professor of internal
medicine and an internationally known AML specialist. About 13,400 new cases of AML are expected this year, and about half will have cancer cells with chromosomes that show distinctive damage. The nature of that damage helps doctors determine a pa...
Molecule blocks gene, sheds light on liver cancer
... principal investigator Tushar Patel, professor of internal
medicine, director of hepatology and a liver-cancer specialist at Ohio State University Medical Center. They show that high levels of miR-21 block the PTEN gene, he explained. This, in turn, activates chemical pathways that enable cancer cells to ...
Pets could be source of multiresistant bacteria infections in humans, MU researchers investigate
...d Middleton, an associate professor of food animal internal
medicine. Are pets a risk factor" This study will help us track where the disease started and determine what questions the physician should be asking if a patient is diagnosed with MRSA....
Fish eyes could hold clue to repairing damaged retinas in humans
...some people but not in others. It is possible that internal
mechanisms exist in the normal adult retina that prevent these cells from dividing and replicating. "Our next step is to identify which factor is responsible for blocking the regeneration," says Dr Limb. "Once we know how this mechanism works, we...
Cell damage caused by brushing may help keep gums healthy
...dant in saliva, to move into the cells, triggering internal
membranes to move up and patch the hole, says Dr. Katsuya Miyake, MCG cell biologist and the papers co-first author. But in the seconds that repair takes, growth factors that promote growth of collagen, new cells and blood vessels leak out of injured...
Prenatal stress keeps infants, toddlers up at night, study says
... which act as a signaling system that tunes bodys internal
clock. This signaling system helps to properly regulate daily rhythms of waking, sleeping, even hunger that is, if its formation has not been disrupted. This could explain why sound sleep doesnt come easily to kids whose signaling systems may not...
Measuring the unseeable: Penn researchers probe proteins' dark energy
... Medicine are the first to observe and measure the internal
motion inside proteins, or its dark energy. This r...n the current issue of Nature has revealed how the internal
motion of proteins affects their function and overturns the standard view of protein structure-funct...
CU researchers discover evidence of very recent human adaptation
...search, so arriving at similar results provided an internal
validation for the accuracy of the new method. Overall, close to 10 percent of the Chinese and European-American genomes and only 1 percent of the African-American genome were linked to areas with evidence of recent selection. Since Africans have the...
Research team discovers gallstone gene
...r Dr. Frank Lammert, the Bonn-based specialist for internal
medicine. Gallstones tend to be found at high levels within certain families. In particular, studies of twins provide evidence of a genetic component that boosts risk levels. "We reckon that environmental influences, like the wrong diet, are 70 to ...
A stepwise retreat: How immune cells catch pathogens
...go fishing for pathogens are called filopodia. The internal
scaffolds of these filopodia are long, dynamic fil...s and transport cargo. Transporting the filopodias internal
scaffold myosins help bringing about the retraction. Likely several copies of myosin proteins act in...
Kaposi sarcoma arises independently from multiple cells
...ase progresses, it can move to the lymph nodes and internal
organs as well. Renan Duprez, Ph.D., of the Institut Pasteur in Paris and colleagues performed the largest study to date on the origins of advanced Kaposi sarcoma. Biopsies from 98 Kaposi sarcoma patients were analyzed using molecular diagnostic t...
Aphids make 'chemical weapons' to fight off killer ladybirds
Cabbage aphids have developed an internal
chemical defence system which enables them to disable attacking predators by setting off a mustard oil bomb, says new research published today. The study shows for the first time how aphids use a chemical found in the plants they eat to emit a dea...
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