Tag: "structures" at biology news
Growing replacement teeth and dental tissues
...aul Sharpe's group has been able to generate tooth structures
from non-dental mesenchymal cells placed in contact with embryonic oral epithelium and transplanted to an ectopic site. The latter report is pivotal in that it demonstrates that uncommitted mesenchymal stem cells, in association with oral epithelium...
Physicists reveal first 'nanoflowers'
...se of their curious similarity to familiar organic structures
such as flower-heads and tiny growing trees. Ghim ...gether in a natural process to form a range of new structures
including these flower-like materials. Professor Mark Welland, head of Cambridge's Nanoscale Science...
TIGR president discusses significance of finding anthrax toxin
...group of organisms. The large plasmids (small DNA structures
outside the cell's chromosome) are highly variable among the bacteria strains, suggesting considerable mobility of key toxin genes. Dr. Fraser also will discuss what this means to the nation's effort to catalog potential biothreat agents an...
UCLA researchers recreate patterns formed by mammalian cells
...milar mechanisms may explain how an embryo creates structures
in evenly spaced patterns in early development or how certain diseases may trigger cells to create lesions in specific patterns. Researchers grew stem cells from adult bovine arteries and found that they produce intricate, lace-like patterns in cultu...
JGI, VBI help unravel sudden oak death & soybean disease
...ded DNA molecules that fold into three-dimensional structures
and bind other molecules with high affinity and specificity. A public biotechnology company, Affymetrix, headquartered in Santa Clara, Calif., has utilized the publicly available sequence generated by JGI and VBI to develop a GeneChip® Microarray...
Scientists receive awards, give lectures at the ASBMB/IUBMB meeting
...is for the immune response. His group solved the structures
of the molecules responsible for attenuating the T...More recently he pioneered in the discovery of the structures
of both class I and class II human major histocompatiblity complex antigens and their recognition of...
Canine word-learning research published in Science
...s remarkable. This ability suggests that the brain structures
that support this kind of learning are not unique to humans, and may have formed the evolutionary basis of some of the advanced language abilities of humans," said Katrina Kelner, Science 's deputy editor for life sciences. The German team first ver...
Tiny tango: Device sorts microscopic particles with speed and precision
...n analytical model would be impossible because the structures
were so complicated, but Jonas got me thinking," said Huang, who has been working on the problem for six years. Within a few days, Huang not only derived a mathematical theory, but had an insight into making an entirely new device that has virtually ...
K-State business researchers to help with major study on food supply veterinary medicine
...ational context of individual careers, opportunity structures
and organizational commitment and promotion and transfer practices and human capital development. He received the Cason Hall Publishing Company Careers Division Best Paper Award at the 2001 meeting of the Western Academy of Management. Among the cour...
Continents played key role in collapse and regeneration of Earth's early greenhouse, geologists say
...form hydrogen ions, which found their way into the structures
of weathering minerals, and bicarbonate, which was carried down rivers and streams to be deposited as limestone and other minerals in ocean sediments. Over time, great slabs of oceanic crust were pulled down, or subducted, into the Earth's ma...
Protein engineered to detect nerve gas
...akes at most a day to calculate a set of candidate structures
and perhaps a week to construct them. So, in the event of the deployment of a new chemical threat, it might take in principle only weeks to develop a sensor system for it. We're now working to develop an automated laboratory process into a system to ...
Biologists discover nerve activity, not just genetics controls kinds of neurotransmitters produced
... propose that while genes control the formation of structures
that produce electrical activity in nerve cells, the activity itself can determine what neurotransmitters are produced. According to Spitzer, this could provide flexibility for the growth and operation of the nervous system. "Biology is a little slop...
U-M scientists use 21st-century technology to probe secrets of M. tuberculosis
...ientists believe the answer could be hidden inside structures
called granulomas, which immune cells build to sur...About 90 percent of the time, these multi-cellular structures
called granulomas are enough to stop the bacteria from spreading. Although the individual will alway...
Molecular image of genotoxin reveals how bacteria damage human DNA
...nd up with a single drop." Stebbins has solved the structures
of over ten other proteins, including the cancer-related VHL tumor-suppressor and several other bacterial toxins, before solving the structure of CDT....
Nanoscale contact optimizes adhesion
...sts a few useful guidelines for designing adhesive structures
in engineering. (PNAS, Early Edition, 17 May 2004)...ckos and many insects have adopted nanoscale hairy structures
on their feet as adhesion devices. The density of surface hairs increases with the body weight of an...
Promising research: From employment issues to virology
...stigation of interactions at the interface between structures
and processes of technical systems. Across the boundaries of their individual fields of research, these scientists are searching for methods and approaches with which to specifi-cally influence the production mechanisms in the run-up to the process, ...
Discovery in parasite movement may offer insights into malaria
...s Toxoplasma and Plasmodium normally lack external structures
such as hairlike cilia, pseudopodia and whiplike flagella for movement, the report said. Instead, their movement is through a unique process called gliding motility - a circular and forward twisting movement - that remains poorly defined, the scienti...
20 May AAAS lecture: Computers that Respond to Human Emotion
...taneously. "I kept bumping into lower level brain structures
that help weigh things and that have a lot to do with human emotions. In a similar fashion, it looked like computers could be 'fixed' if they could also incorporate emotions." According to MIT's Affective Computing Research Group, perhaps the most fu...
Are nanobacteria alive?
... Cautiously titled "Evidence of nanobacterial-like structures
in human calcified arteries and cardiac valves", t...am describes how they isolated minuscule cell-like structures
from diseased human arteries. These particles self-replicated in culture, and could be identified wi...
New insights on sirtuins, involved in gene expression and aging
...ein's research team is identifying molecules with structures
that might bind to this pocket and serve as Sir2 activators. With senior author Marmorstein, the equally contributing lead authors were Kehao Zhao, Ph.D., and Robyn Harshaw, and the other co-author was Xiaomei Chai. Funding for the research was pro...
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