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Tag: "difference" at biology news

High-throughput oncogene mutation detection in human cancers by mass spectrometry-based genotyping

...dated in this manner, and believe that much of the difference is due not to the mass spectrometry method but to limitations of the laborious sequencing test "which is not always sensitive in tumor specimens," Dr. Garraway said. He added that the mass spectrometry test offers information that is distinct from t...

Climate experts search for answers in the oceans

...and Medspiration Project Manager. "ESA is making a difference to public awareness of climate change by helping us to better understand the sea surface temperature story." Phytoplankton, microscopic marine plants that drift on or near the surface of the sea, absorb atmospheric carbon dioxide through photosy...

Particle size matters to bacteria ability to immobilize heavy metals

...pe but different size down to 10 nm show a 10-fold difference in bioreduction rates. Smaller nanoparticles show a lower rate of reduction than larger nanoparticles after normalized to surface area. That is, the bacteria will reduce 100 nm particles much faster than smaller particles. "This study provides the gr...

Mayo Clinic: Gene expression profiling not quite perfected in predicting lung cancer prognosis

...sely, genes expressed at low levels or in a subtle difference are often overlooked, which may be quite relevant biologically to clinical questions. The authors of the study recommend that medical scientists engaged in gene expression profiling should: Clearly define a study aim. The main focus in mi...

Flu shot effective against drifted influenza, nasal spray vaccine less so

...on't completely understand." "It may be that the difference in effectiveness between the shot and the spray can be attributed to poorer protection against type B infections in participants given FluMist," Monto said, but that's not clear from this study. The live attenuated vaccine marketed as FluMist was...

Uniform tungsten trimers stand and deliver

...s and value-added chemicals. "There is a striking difference between commercial catalysts and the new model system," said Mike White, the UT professor leading the PNNL Institute for Interfacial Catalysis. Variability in commercial catalyst size and chemical composition makes it difficult to accurately understa...

Male chimpanzees prefer mating with old females

... humans, their primate cousins. The basis for this difference may lie in the fact that whereas chimpanzees participate in a relatively promiscuous mating system, humans form unusually long-term mating bonds, thereby making young females more valuable as mates with greater reproductive potential. The findings, r...

Climate change has surprising effect on endangered naked carp

...r in lake-water than in river-water, and that this difference is almost complete within twelve hours after transfer," write the authors. "The magnitude of this response is remarkable." But they caution, "If the lake continues to dehydrate, these benefits may change to pathology."...

Technology for monitoring fetal oxygen during labor offers no apparent benefit

...on monitoring produced no statistically meaningful difference in Caesarean delivery for infants with a disturbance in fetal heart rate, (7.1 percent for the open group, 7.9 percent in the masked group). Differences in Caesarean delivery rates for dystocia also were not statistically meaningful between the two ...

Temperament linked to onset of cancer and early death in female rats

... cancer earlier, the scholars found. There was no difference in the length of time between onset of cancer and ...rs found. Because the findings have identified a difference in temperament that is associated with the onset of cancer, the findings may have implications for r...

Fatty fish protects against cancer

...etween fatty and non-fatty fish." One significant difference between oily and non-fatty fish lies in how much omega-3 fatty acids and vitamin D they contain ?substances that, according to earlier cell studies, seem to protect against cancer. Fatty fish contains more omega-3 fatty acids than non-oily fish, and ...

New biochip helps study living cells, may speed drug development

...ng, he said. Ion channels and pumps establish a difference in electrical potential across a cell's membrane, which cells use to create energy and transfer electrical signals. By quickly allowing ions in and out, they are useful for rapid cellular changes, the kind which occur in muscles, neurons and the rele...

Singing for survival

...dator song, demonstrating that they understood the difference between calls." The researchers also observed the singing behaviour of gibbons spending time away from their home group. They noted that during predator songs within the group setting, the absent individual responded with his own song, before reap...

Blue eyes -- A clue to paternity

.... Both blue-eyed and brown-eyed women showed no difference in their preferences for male models of either eye color. Similarly, brown-eyed men showed no preference for either blue-eyed or brown-eyed female models. However, blue-eyed men rated blue-eyed female models as more attractive than brown-eyed model...

Hard-wiring the fruit fly's visual system

... only rely on genetic inputs." "The most obvious difference between the insect and vertebrate brain is their size and the number of neurons and connections that need to be made. A possible explanation for the findings is that the fruit fly has many fewer neurons than vertebrates, and the system can therefore...

A giant among minnows: Giant danio can keep growing

...y can more easily identify the genetic keys to the difference in growth potential between them. According to co-...Biga, “I don’t think there will be a major genomic difference between them. I believe it will be easy to define the difference.? The study “Zebrafish and giant ...

Elasticity imaging identifies cancers and reduces breast biopsies

.... Barr explained. “The patient does not notice any difference from a standard ultrasound.? Dr. Barr used a real-time, free-hand, elasticity imaging technique in correlation with a routine ultrasound exam to study 166 lesions identified and scheduled for biopsy in 99 patients. Lesions were measured for the lar...

Second opinion yields treatment changes for half of patients

...ddition, a dedicated breast pathologist can make a difference in how the cancer is staged, which in turn can affect treatment recommendations. In this study, the tumor board pathologists interpreted test results differently in 29 percent of patients. For some patients, this meant a change in diagnosis, for othe...

Got inexpensive contrast agent? Milk plays new role in imaging

...owel-wall conspicuity (enhancement). One important difference is the price. VoLumen costs $18 per patient, while whole milk costs $1.39 per patient. “There are several advantages to milk. Patients are more willing to drink milk than VoLumen, and it costs a fraction of the price,?Dr. Shah-Patel said. “We hop...

Jumping gene could provide non-viral alternative for gene therapy

...ther circular pieces of DNA at making a home and a difference in several mammalian cell lines, including three human ones. "If we want to add a therapeutic gene, we can put it within the transposon and use it to deliver the gene into the cell," says Dr. Joseph M. Kaminski, radiation oncologist at the Medical ...

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