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Tag: "sometimes" at biology news

Rochester scientists develop fast-working biosensor

...curately and rapidly detects the meat-spoiling and sometimes dangerous E. coli bacteria. The unique technology uses a protein from the suspect bacteria as part of the sensing system that also includes a silicon chip and a digital camera. The journal Biosensors and Bioelectronics published an article on the t...

Wisconsin scientists discover a master key to microbes' pathogenic lifestyles

...uise of pathogenic yeast, causing such serious and sometimes deadly afflictions as blastomycosis and histoplasmosis. But how these usually bucolic fungi undergo such a transformation to become serious pathogens has always been a puzzle. Now, however, a team of scientists from the University of Wisconsin Schoo...

Technique makes it easier to see mouse embryo in all its glory

...ulated genes in the types of cancers that children sometimes acquire. The study of genetically modified embryos and their birth defects is usually a slow and laborious process, but Dr. Keller and colleagues have found a way to make the analysis much faster '" and more accurate. Traditional histology involves...

Portable cocaine sensor developed at UC Santa Barbara

...with: powdered sugar, flour, or the coffee that is sometimes used to mask the smell from dogs." At this point the new sensor detects cocaine in the blood or saliva to a degree of a few micromolars. This is equivalent to the concentration of cocaine that would result from dropping a kilogram of cocaine into an...

Men and women differ in brain use during same tasks

...ame tasks and show different brain activation, and sometimes they would perform different tasks and show the same brain activation." "It is widely recognized that there are differences between males and females, but finding that different regions of the brain are activated in men and women in response to the ...

Making medicine 'smarter'

...n fallibility on the part of medical professionals sometimes leads to devastating misdiagnoses that can result in additional suffering, or even death, for their patients. But there is hope for better, more accurate medical diagnoses through the development of new technologies, and one Florida State University...

Study shows combination of immune substances to be safe

...ancers. This strategy, a form of immunotherapy, is sometimes used to treat melanoma, advanced kidney cancer and other tumors that respond poorly to chemotherapy or radiation therapy. But interferon can have serious side effects that limit its use. Surprisingly, the two drugs used in sequence caused no seriou...

How Rickettsial pathogens break into cells

... other mammals, where they can cause dangerous and sometimes fatal infections. There are two types of Rickettsial pathogens--the spotted fever group, which includes the Rickettsia conorii bacteria studied by Cossart and her colleagues, and the typhus group. Both must live inside cells to survive. Rickettsia h...

Bats use touch receptors on wings to fly, catch prey, study finds

... a room, they would drop or even jump in altitude, sometimes erratically. When the hairs grew back, the bats resumed making turns normally. "It was obvious they had trouble maintaining elevation on a turn," he said. "Without the hairs, the bats were increasing the curve of their wings too much or not enough."...

Why we give: New study finds evidence of generosity among our early human ancestors

...produce much food, close kin, and nearby neighbors sometimes receive more than they give." ...

Greasing interferon's gears may pave way to greater therapeutic benefits, fewer side effects

...o currently benefit from interferon treatment, but sometimes find it difficult to tolerate the side effects of the high doses required. "We reasoned that if we could enhance the way interferon produces its beneficial defensive effects, the body could respond to its normal level of interferon and receive enha...

Jefferson scientists identify gene defect leading to abnormal skin development and cancer

...s every invertebrate it comes in contact with, and sometimes fish. The lampricide is tanker-trucked to streams, some of them in populated areas, in an expensive, labor-intensive and unpopular undertaking. The GLFC is eager to use a synthetic form of the newly found pheromone to replace the poison by luring lam...

Discovering the first steps in transcription-coupled repair

...s along, enclosing the DNA and the open bubble, it sometimes encounters a damaged nucleotide on the strand it i...ult. Unable to continue copying, RNAPII pauses and sometimes grinds to a halt. Exposure to sunlight causes decreased transcription when ultraviolet-induced DNA ...

Leading lampreys to slaughter: Pheromone for scourge of Great Lakes identified

...s every invertebrate it comes in contact with, and sometimes fish. The lampricide is tanker-trucked to streams, some of them in populated areas, in an expensive, labor-intensive and unpopular undertaking. The GLFC is eager to use a synthetic form of the newly found pheromone to replace the poison by luring lam...

Phenotype is influenced by nature, nurture and noise

...n biochemical pathways that generate oscillations, sometimes in 24-hour circadian periods. Hasty, graduate students Dmitri Bratsun and Dmitri Volfson, and post-doctoral fellow Lev. S. Tsimring modified the Gillespie algorithm, a well known computer model of cellular reactions, by factoring in intrinsic noise a...

Many needles, many haystacks

...how globular domains interact with each other. But sometimes a surface on one globular domain will grab a tiny, string-like region of another protein called a linear motif. Finding such motifs and predicting where they fit in is like looking for needles in haystacks." Or like looking at a line of automobiles ...

Jefferson biologist coaxing human embryonic stem cells to make dopamine with simpler, faster method

...dented look at how the immune system attacks -- or sometimes promotes -- disease at the molecular level. It may help scientists and clinicians better evaluate specific immune responses to disease, making diagnosis and treatment more precise and effective. When confronted with disease, the immune system deploy...

Adult stem cells aid recovery in animal model of cerebral palsy

... on two forms, A. gambiae M and A. gambiae S, that sometimes mate and create hybrid forms in nature. While it's unclear whether the forms can produce fertile hybrid offspring in the wild, the progeny of lab matings appear to have no problems with fertility. This suggests that individuals either naturally prefe...

PET imaging reveals the immune system at work

...dented look at how the immune system attacks -- or sometimes promotes -- disease at the molecular level. It may help scientists and clinicians better evaluate specific immune responses to disease, making diagnosis and treatment more precise and effective. When confronted with disease, the immune system deploy...

Islands in the Genome Promote Speciation

... on two forms, A. gambiae M and A. gambiae S, that sometimes mate and create hybrid forms in nature. While it's unclear whether the forms can produce fertile hybrid offspring in the wild, the progeny of lab matings appear to have no problems with fertility. This suggests that individuals either naturally prefe...

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