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Tag: "rather" at biology news

DNA Molecules Used To Assemble Nanoparticles

...al dendrimers that can be synthesized in parallel, rather than sequentially, and then linked together in many different combinations with the DNA strands. "So it's like having a shelf full of Tinker Toys," Baker said. An array of single-functional dendrimers, such as targets, drugs, and contrast agents, a...

Priming embryonic stem cells to fulfill their promise

... using such amachine to spot solutions of proteins rather than DNA. The UCSDresearchers also refined other parameters so that the technique wouldbe reproducible in other research laboratories."When we talked to our colleagues, it was clear that, whether it'scells in the liver, brain, or heart, there had bee...

Newly-discovered class of genes determines ?and restricts ?stem cell fate

...arce resident stem cells that grow uncontrollably, rather than from the vast majority of differentiated cells that make up organs where cancers are found. If this theory is correct, resident stem cells in the skin could be the cells that turn into skin cancers like melanoma. Understanding stem cell biology ...

Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine

...e discovered that CLL is not a uniform disease but rather a disease that follows two distinct clinical courses in patients. Some patients require no treatment and have a lifespan of more than 20 years after diagnosis. Since the disease most often strikes older adults, the patients whose disease follows this...

The transparent organism: EMBLEM and Carl Zeiss give labs a unique look at life

...SPIM is the illumination of a sample from the side rather than along the traditional view of the microscope lens. This eliminates a problem that has plagued three-dimensional microscopy in the past: researchers could obtain excellent resolution in the plane of the microscope slide, but resolution along the ...

Mitochondrial DNA mutations play significant role in prostate cancer

...l cases that are notpassed from father to son, but rather through the unaffected mother toher sons."...

New Clues Add 40,000 Years to Age of Human Species

...t’s fascinating that we can now see that these two rather different individuals were living at the same time and in the same region,?he adds. The researchers also discovered the fossil-rich strata can be linked to sapropels, sediment layers found in the eastern Mediterranean, which, along with ice cores, t...

Critical role in programmed cell death identified

...l fragmentation in cell death have been done under rather artificial conditions, in tissue culture, not using natural cell death stimuli, " Conradt explains. "Our work was done in vivo; in the worm. We looked at cells that normally die, so it's more solid." ...

Elephants imitate truck noises, other animals

...ate particular trucks as she was hearing them, but rather seemed to use generalized truck sounds as the model for her imitation. Calimero, a 23-year-old male African elephant who lived for 18 years with two female Asian elephants in a Swiss zoo, was a nearly perfect mimic for the chirp-like calls of his lo...

UCSD researchers maintain stem cells without contaminated animal feeder layers

... and the Whittier Institute, said that "it will be rather simple now to develop a specific defined medium that allows for the maintenance of the human stem cells and enhances research without the problem of contaminating animal cells and their products." In a summary to their paper, the researchers noted t...

Placenta Is A Rich Source Of Blood Stem Cells

...ge and waste removal between mother and fetus. But rather than merely providing nutrients, Orkin says, the placenta may also provide an ''infusion'' of blood stem cells to the fetus. ''This research reveals a new organ for blood development,'' Orkin says. ''It is surprising that this role for the placenta ...

Open microfluidic and nanofluidic systems

... a couple of micrometer. At first sight, it seems rather obvious to use such surface channels as microcompartments. However, if one actually tries to fill these channels with a certain liquid, one observes that the liquid often refuses to enter the channels. In fact, as shown in the new PNAS study, liquids...

Elephants imitate sounds as a form of social communication

...ate particular trucks as she was hearing them, but rather seemed to use generalized truck sounds as the model for her imitation. Calimero, a 23-year-old male African elephant who lived for 18 years with two female Asian elephants in a Swiss zoo, was a nearly perfect mimic for the chirp-like calls of his lo...

Ants Genetic Engineering Leads To Species Interdependency

... it is the environment in which a femaleis raised, rather than a genetic predisposition, that determines whichcaste she will adopt.However, in two harvester ant populations in southern New Mexico,queens and workers from the same colonies are genetically verydifferent; in both species at the site, only the q...

Researchers trace evolution to relatively simple genetic changes

... have evolved to have almost no body armor. "It's rather like a military decision, to be either heavily armored and slow, or to be lightly armored and fast," Kingsley said. "Now, in countless lakes and streams around the world these low-armored types have evolved over and over again. It's one of the oldest...

Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

... have evolved to have almost no body armor. "It's rather like a military decision, to be either heavily armored and slow, or to be lightly armored and fast," Kingsley said. "Now, in countless lakes and streams around the world these low-armored types have evolved over and over again. It's one of the oldest...

Research Gives Hope For Liver Damage

...te and de-activate thesecells to make them repair, rather than damage, liver tissue."He added: "Cirrhosis, commonly, but not always, caused by alcoholconsumption, can lead to liver failure. At a time when outcomes forother diseases, such as cancers and heart trouble, have made dramaticgains, liver damage - ...

Gene vaccine for Alzheimer's disease shows promising results

...we decided to tryvaccination with an amyloid gene, rather than the amyloid proteinvaccine," said Dr. Rosenberg.The UT Southwestern researchers vaccinated mice with a "gene gun." Thegene gun and gene-vaccination technologies were invented by Dr. StephenAlbert Johnston, director of the Center for Biomedical I...

Scientists identify molecular events that drive cell senescence

...we decided to tryvaccination with an amyloid gene, rather than the amyloid proteinvaccine," said Dr. Rosenberg.The UT Southwestern researchers vaccinated mice with a "gene gun." Thegene gun and gene-vaccination technologies were invented by Dr. StephenAlbert Johnston, director of the Center for Biomedical I...

Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells

...ncer cells in fluids taken directly from the body, rather than isolated by type in a flask. This problem will be solved by winnowing out unlikely particles through size and frequency. ...

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