size 2 10

Tag: "size" at biology news

Scientists show how thinking can harm brain cells

...beading, loss of dendrite spines, and reduction in size ?is seen in HIV-1-associated dementia and Alzheimer's. In laboratory studies, brain cells and slices were exposed to platelet-activating factor, or PAF, a compound that promotes inflammation and plays many roles in the brain. It can be produced by n...

GROWing the next generation of water recycling plants

...ext aim for GROW is to see if it can be reduced in size to sit above a household water butt, making it serviceable for individual households. The team will also investigate whether the addition of an ultraviolet light can enhance the disinfection of the water. They hope to market GROW commercially in the ...

Scientists fetch useful information from dog genome publications

... from two kennels that disagreed on an appropriate size standard for the breed. Although there were only...nimals in this initial gene pool, the considerable size differences among the founding individuals has made the PWD breed an excellent model for investigati...

Dog genome sequenced

... from two kennels that disagreed on an appropriate size standard for the breed. Although there were only...nimals in this initial gene pool, the considerable size differences among the founding individuals has made the PWD breed an excellent model for investigati...

Targeted drug delivery achieved with nanoparticle-aptamer bioconjugates

...e Cancer The prostate is a small gland about the size and shape of a walnut situated just below the blad...rted. Prostate cancer begins with small changes in size and shape of the prostate gland cells which can develop into an uncontrolled growth of cells. Pros...

Researchers use 'trickery' to create immune response against melanoma

...e Cancer The prostate is a small gland about the size and shape of a walnut situated just below the blad...rted. Prostate cancer begins with small changes in size and shape of the prostate gland cells which can develop into an uncontrolled growth of cells. Pros...

UCLA scientists discover immune response to HIV differs, even in identical twins

...s random and unpredictable--indicating that a "one size fits all" vaccine may not be possible. "If the goal is to develop a vaccine, our findings suggestthis may not be so straightforward," said Dr. Otto Yang, associate professor of infectious diseases at the David Geffen School of Medicine at UCLA, and ...

NASA's AURA satellite peers into Earth's ozone hole

...in previous years. NASA's 2005 assessment of the size and thickness of the ozone layer was the first bas...ich was slightly larger than last year's peak. The size of the ozone hole in 1998, the largest ever recorded, averaged 10.1 million square miles. For 10 of ...

Picking particles faster than one at a time

...endered in high contrast. Only shapes of a certain size and brightness are retained; all the rest are thro...program user needs to set parameters like particle size and gray-scale range only once, on a single micrograph. Thereafter the program runs on its own, sort...

Overfishing in inland waters reduces biodiversity and threatens health

...espond to fishing pressure with reductions in mean size at maturation. Allan and colleagues identify two ...ds to marked declines in catch per unit effort and size of individuals captured. The second type is characterized by sequential declines of species and depl...

Marsupial genome reveals insights into mammalian evolution

...Supercomplex.'" Belov et al. found that while the size and complexity of the opossum MHC is closer to eutherian (placental) mammals, its organization is closer to fish and birds. "The clues we unearthed by looking at different genomes are also helping us to understand how our own intricate immune system...

Common molecular 'signature' identified in solid tumors

... only 22 or so nucleotides in length ?miniscule in size when compared to their cousins, messenger RNA, which can be several hundred to a thousand times that long. But several years ago, researchers studying roundworms noted that properly functioning miRNA was necessary for normal development. Since then...

Stem cell mobilization therapy appears to be ineffective in repairing damage caused by heart attack

... researchers found that this did not alter infarct size (area of damage) or left ventricular function after a heart attack. "Moreover, in contrast to other studies, no increase in the risk of restenosis (narrowing again of an artery after treatment) or major adverse cardiac events was observed with G-CSF ...

Portable cocaine sensor developed at UC Santa Barbara

...n be housed in supporting electronics that are the size of a small hand-held device. Co-author and Nobel laureate Alan Heeger said, "We have developed a method of detecting small molecules and proteins in a way that is not specific to cocaine –?a whole class of biosensors can be based on this concept. It...

3D ultrasound device poised to advance minimally invasive surgery

...acked into a tube 12 millimeters in diameter ? the size required to fit into surgical instruments, called trocars, that surgeons use to allow easy exchange of laparoscopic tools. By comparison, most two-dimensional ultrasound probes use just 64 cables. "It's a feat of technology and craftsmanship to buil...

Rare Tibetan antelope listed as endangered

...acked into a tube 12 millimeters in diameter ? the size required to fit into surgical instruments, called trocars, that surgeons use to allow easy exchange of laparoscopic tools. By comparison, most two-dimensional ultrasound probes use just 64 cables. "It's a feat of technology and craftsmanship to buil...

DNA gene vaccine protects against harmful protein of Alzheimer's disease

...researchers also plan to see if it can reverse the size of established plaques in the brains of mice. ...

Cellular scale drug delivery from the inside out

...only about 200 nanometers in diameter, roughly the size of a virus, so they won't trigger an immune response in the body," Lin said. "They're also biocompatible so they can be readily absorbed by the cells." But it's the structure of the nanospheres that makes drug delivery possible. The spheres have th...

Embryos tell story of Earth's earliest animals

...r effects. The scientists also found that embryo size does not influence the fossilization process. Sea ...imeter). "This is good news," Raff said. "Embryo size tells us a great deal about the evolution and development of these organisms." The fertilization e...

Plants give pests sock in the gut

...mented sugar solution commonly used as a molecular size marker. Results showed that Mir1-CP created holes in the matrix. To replicate the test in vivo, the researchers fed caterpillars with plants susceptible to the insects and those resistant to them. Results indicate that after seven days, the level o...

1 2 3 4 5 6 7 8 9 10