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Tag: "detection" at biology news

New study examines how sense of smell affects mating and aggression in mice

...xual status of individuals of a species, and their detection is a key step in regulating behaviors such as mating and aggression. The new study findings show, however, that male mice require intact functioning of the main olfactory epithelium (MOE) in order to detect pheromones that elicit sexual behavior and...

Plant defenses prompt bacterial countermeasure in the form of 'island' DNA excision

...s means that the bacteria can, in principle, evade detection if it can shut down production of the offending protein or proteins. In their study, the authors identify within the halo-bright pathogen genome a special island of DNA that encodes one such offending protein. But this genomic island also encodes enz...

DNA technique measures suitability of soil for onion crops

...omparative trials, the molecular test had a higher detection rate than the traditional microscopic investigation for both the stem nematode and onion white rot. Each year thousands of soil samples are investigated for their suitability for onion crops. They are examined for the presence of the nematode Dityl...

Olfactory system detects pheromones that control reproduction

...hich is found in a wide range of mammals, involves detection of chemical odorants released by animals. Pheromon...ne secretion. According to most biology textbooks, detection of pheromones takes place in a specialized structure, called the vomeronasal organ (VNO). Although t...

Researchers make long DNA 'wires' for future medical and electronic devices

...tween the electronic and the biological could make detection of certain chemicals easier, and speed disease diagnosis. But first, researchers must develop technologies to mass produce DNA circuits as they produce chip circuits today. The technique that Lee and Guan used is similar to a relatively inexpensive ...

Young scientists turn to gel to ease side-effects of cancer treatment

...formula of the gel can be used as a phantom in the detection of brain tumours. Working with researchers at the Centre for Magnetic Resonance Investigations, at Hull Royal Infirmary, the team has developed a technique which uses the gel to improve the accuracy of targeting tumour cells. Magnetic Resonance Spe...

RNA splicing occurs in nerve-cell dendrites

...nologies developed in their lab, which permits the detection and quantification of RNA splicing as well as the translated protein in single isolated dendrites. "In addition to showing that mRNA splicing occurs in dendrites in which we added mRNA, we also detected the resulting protein," notes Eberwine. "Since...

Making medicine 'smarter'

...nce imaging (MRI) -- which holds promise in better detection of hard-to-find cases of breast cancer -- to provide doctors with the more critical eyes of a computer. Despite the incredible potential of MRI technology, which cranks out at least 200 scans for a single patient, the sheer volume of images can be da...

ASU researchers 'wire' DNA to identify mutations

...as developed a new, breakthrough technique for the detection of DNA mutations. Their results, published in the... "Currently, the main issue in doing this type of detection is that it is still costly and time consuming." The team's breakthrough relies on an intrinsic phys...

Sooner is better with cochlear implants, Stanford scientist shows

...ing loss and it reinforces the importance of early detection and intervention for children with hearing loss. Children who need an implant would benefit from having it sooner rather than later, the authors conclude in their paper. As a developmental psychologist, Fox said that he has always heard that earlier...

Have a taste for fat? Yes! A sensor in the mouth promotes preference for fatty foods

... colleagues identify the first candidate for lipid detection in the oral cavity. The authors combine genetic, morphological, behavioral and physiological approaches to pinpoint the multifunctional glycoprotein CD36 (also termed fatty acid transporter, FAT) as the sensor for fat. They show that lingual stim...

Preclinical study of a new brain tumor therapy

...sh between cancerous and healthy cells through the detection of molecules known as epidermal growth factor receptors (EGFR). The glioblastoma cells overexpress EGFR (that is, in comparison with normal brain cells, they have many more of these molecules on their surface). The scientists then selected a type of ...

Portable cocaine sensor developed at UC Santa Barbara

...e sensor are far-reaching and include bioterrorism detection and important medical uses. The high school stude...cal techniques due to pressing needs for its rapid detection in law enforcement and clinical settings." The sensor can be housed in supporting electronics that a...

Rochester scientists develop fast-working biosensor

...confirmation of detection. Traditional methods of detection of bacteria can take days. "This takes as much time as it takes for a snapshot," Miller said. The scientists currently are defining the sensitivity levels of the technology, previously called reflective interferometry, and extending the system to ot...

UC Berkeley researchers create a biologically-inspired artificial compound eye

...s plans to link them to spectroscopes for chemical detection and analysis. "The lenses and waveguides are the most important part of the system," Lee said. "People have said that it would be totally impossible to create them with an angle, but now that we've done it, we're ready to integrate imaging or chemic...

Carbon nanotubes that detect disease-causing mutations developed by Pitt researcher

...id. He added, "The applications of our method for detection of other, more serious genetic diseases can be seen." Label-free electronic detection of DNA has several advantages over state-of-the-art optical techniques, including cost, time, and si...

Detection of DNA on nanotubes offers new sensing, sequencing technologies

... applications for the new sensors range from rapid detection of hazardous biological agents to simpler and more...r. "We have successfully demonstrated the optical detection of selective DNA hybridization on the surface of a nanotube," said Strano, who is also a researcher ...

Chemical warfare agent detection technology used to treat lung disease

...s research could make dramatic improvements to the detection of lung diseases. We are really excited about the future possibilities for diagnosing diseases, and monitoring the response to treatment." The microDMx sensor can be used to detect and analyse a broad spectrum of molecules associated with different ...

Immune system response to viral DNA is unique

...is well established that such a pathway exists for detection of viral RNA inside infected cells," Stetson said. "In contrast, very little is known about whether cells can detect foreign intracellular DNA or how this system might function." Stetson and Ruslan Medshitov, professor of immunobiology, a Howard Hug...

Behavioral studies show UV contributes to marsupial color vision

... show that at least one type of marsupial uses its detection of UV light as part of its ability to discriminate between colors. The new work is reported by a group including Dr. Catherine Arrese of the University of Western Australia and appears in the March 21st issue of Current Biology. The most prevalent s...

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