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Tag: "sense" at biology news

Stopping plants from getting sick

...ops ?as he saw when he was a child. The fungi also sense lipids and phosphorous in the plant, meaning the right kind of fungicide might be developed to target that ability and block infection. "These pathogens provide us with the best of both worlds in terms of research ?we can study them in the field, ...

Scientists unlock mystery of embryonic stem cell signaling pathway

...n a layer of mouse fibroblasts has never made much sense to the scientists forced to do just that. “Stem cells that grow on feeders are contaminated with mouse glycoproteins markers,?Kahn says. “If you use them into humans, you’d potentially have a horrible immune response.? And so, in order to take any ...

Speeding 'fingertip' discovery -- 20 years of protein info in 1 place

...e proteins in greater depth. After all, there’s no sense in reinventing the wheel.? Pandey and his team now are curious about other chemical modifications of proteins, which are the “business-end?products of our genes. “There is evidence of other, more fragile modifications that until now no one has bee...

Natural polyester makes new sutures stronger, safer

... "Not only is it technically and in an engineering sense a tremendous victory, but it's also a victory for society because this leads to new medical devices that can help people in new and novel ways," said Sinskey, who is one of the founders of Tepha and sits on its board of directors. The new suture i...

Ultrasound upgrade produces images that work like 3-D movies

.... The brain processes the information to produce a sense of depth, a phenomenon that can't be achieved when viewing a single, flat image. Stereoscopic images solve that problem by taking two "snapshots" of the same object from slightly different angles, mimicking the normal difference between left and r...

Scripps Research study reveals new activation mechanism for pain sensing channel

... continued. "Somehow the TRPA1 protein is tuned to sense cysteine modifications. In fact, any cysteine reactive agent seems to activate TRPA1, although we don't know exactly how cysteine binding translates into ion channel activation." But this activation mechanism comes with an interesting property. ...

Baby fish 'smell their way home'

...coral reef across miles of open sea by using their sense of smell. Remarkable in itself, the discovery by .... "An egg, even a fry, hasn't a fully developed sense of smell, but it may have a way of absorbing the local molecules and then recognizing their signatur...

Hay fever can send work productivity down the drain

...ith allergy patients,?Szeinbach said. “So it makes sense that family physicians would see patients with a broad spectrum of allergy symptoms. “Both kinds of physicians have access to thorough diagnostic tests, and can also prescribe heavy-duty allergy drugs, such as steroids that help block the body's n...

Satellites shed light on global warming

...portant means of ocean adjustment to forcing. In a sense they ‘set the rhythm?for some aspects of the interactions between oceans and climate. Faster waves in a warmer ocean, as an effect of climate change, may result in complex repercussions on the climate system, many of which could turn out to accelerat...

Bacterial response to oxidation studied as toxin barometer

...on’t have to have 20 sensors for 20 toxins. We can sense the presence of any oxidative toxin,?Love said. Ikuma, who was an undergraduate biology student at Virginia Tech when she began working with Love, has now come full circle from a biology student working on a civil engineering research project to a...

Genomics throws species definition in question for microbes

...endations. In the late 1800s, in order to make sense of the vast diversity of microbiological organisms, microbial taxonomists developed a system of placing microorganisms into categories in which each organism was granted a "genus" and "species" designation. At the time, physical (or phenotypic) prop...

New science of metagenomics 'will transform modern microbiology'

... computers are allowing scientists to begin making sense of these metagenomic jigsaw puzzles. They can examine gene sequences from thousands of previously unknown microorganisms, or induce the bacteria to express proteins that are screened for capabilities such as vitamin production or antibiotic resistan...

Ring-around-the-cell

...around the bone until they reach a site where they sense that their services are required, at which point they undergo a transformation called polarization. The polarized osteoclast sticks itself tightly to the bone, while an impermeable ring forms around the cell perimeter. This ring functions to keep the...

New insights into autoimmunity and depression

...highlighted areas of the brain associated with the sense of smell. These findings provide a novel line of research into the mechanisms underlying the limbic and olfactory pathways in depression. Imaging studies both in patients with clinical depression and patients with SLE could help determine whether ...

When smell cells fail they call in stem cell reserves

...st severe damage to the nerves responsible for our sense of smell. These reservists normally lie around and...as a fail-safe to ensure continued function of the sense of smell.? The discovery of these two distinct types of stem cells in one neural tissue is a firs...

Major link in brain-obesity puzzle found

...e to stop eating. Their bodies lose the ability to sense the signals sent by leptin and insulin that tell the brain to slow down food intake and fat storage. For the new paper, they looked at not only normal mice and mice that didn’t have the SH2B1 gene, but also at mice that made SH2B1 only in brain c...

Penn researcher shows that DNA gets kinky easily at the nanoscale

...examine molecules in such fine detail. "Common sense and physics seemed to tell us that DNA just shouldn't spontaneously bend into such tight structures, yet it does," Nelson said. "In the conventional view of a DNA molecule, wrapping DNA into a nucleosome would be like bending a yardstick around a ba...

Neuron cell stickiness may hold key to evolution of the human brain

...Rubin, "In hindsight the results of our study make sense since our cognitive abilities are clearly one of the most distinct of all human attributes and we would expect these abilities to result from human-specific aspects of neuronal development. Our results also suggest that analysis of the differences...

Why don't all moles progress to melanoma?

...co-author on our paper, have found that the ER can sense changes in glucose, nutrients, oxygen levels and other aspects of cellular physiology associated with diseases like diabetes and Alzheimer's disease." "In our study, we found that the ER senses the activity of certain oncogenes in the melanocyte an...

Uncovering DNA's 'sweet' secret

...r aparticular purpose." "For a chemist, it makes sense to analyze the origin of these molecules." One particular curiosity: how did DNA and RNA come to incorporate five-carbon sugars into their "backbone" when six-carbon sugars, like glucose, may have been more common? Egli has been searching for the a...

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