Genetic differences might help distinguish thyroid cancers
...hat are closely related and sometimes difficult to distinguish can be readily identified by differences in only a... those rare instances where the pathologist cannot distinguish between FTC and PTC," says study leader Charis Eng, the Dorothy E. Klotz Chair of Cancer Research an...A test case for DNA barcodes to identify species
...e is sufficiently characteristic of one species to distinguish it from every other species, and that comparisons of sequence variations in that gene can also reveal evolutionary relationships among species. Hebert and colleagues tested the effectiveness of their genetic barcode in an extensive study of North Ame...Hidden diversity: DNA 'barcoding' reveals a common butterfly is actually 10 different species
...n much the same way that supermarket barcoding can distinguish one brand of canned beets from another, DNA barcoding is an attempt to classify species by variations in a small signature and standardized portion of gene called cytochrome c oxidase I, common to all life. Based at the University of Guelph in Canad...DNA barcode finds four new bird species
...ting test by measuring whether the technique could distinguish closely related species as well as very different ... the eggs and larvae of insects. And it can easily distinguish between species that look alike. ...Scientists find nanowires capable of detecting individual viruses
...r results also show that these devices are able to distinguish among viruses with nearly perfect selectivity." While there are many ways for researchers to assay viruses, most are laborious and appropriate only in laboratory settings. The use of nanowires provides immediate verification of a given virus's presen...Brain has center for detecting sound motion
...hen that, strangely, you suddenly became unable to distinguish the motion of sounds, even while you retained the ability to pinpoint their location. That's exactly the experience of a patient reported by Christine Ducommun and her colleagues, who used studies of the patient to demonstrate conclusively for the fi...News tips from the Journal of Neuroscience
...emaker" current that drives spontaneous firing. To distinguish between these candidates, Jackson et al. recorded from dissociated SCN neurons in current clamp and then used the firing pattern of each cell as a voltage command. When the sodium current was blocked, L-type channels were only able to support slow os...Researchers identify distinctive signature for metastatic prostate cancer
...measured by detecting some marker in the blood to distinguish indolent from metastatic disease, they could know to treat the metastatic form and not the indolent form," he said. "If the indolent form, for example, were detected in older men, it might not be as necessary to perform a prostatectomy, since there w...OutFoxed! New research may redefine late-stage cardiac development
...m in Foxp4 mutant embryos show the same ability to distinguish left and right "sidedness". Many organs in the mammalian body have distinct left and right sides such as the heart and lung. In Foxp4 mutant embryos, both hearts show the correct "sidedness" regardless of whether they were on the right or left sid...Wrapping a memory with an experience, capacity for recollection detected in non-human species
...ans, signal detection techniques have been used to distinguish memory responses triggered by familiarity, the general sense that a person or thing has been previously perceived, from those triggered by recollection, the sudden rush of detailed memory. The BU team chose to determine whether analyses related to t...Genuine stem cells found in skin might treat hair loss, wounds
...added. Once the essential genetic differences that distinguish embryonic and adult stem cells come to light, they said, the more accessible stem cells in skin might ultimately prove useful in the future for generating tissues lost in certain other types of diseases, such as some forms of blindness, or possibly e...Study reveals first genetic step necessary for prostate cancer growth
...into prostate cancer. Greenberg said that tests to distinguish between men who only have Rb mutations and those w... The test has been controversial because it cannot distinguish between men who have non-progressing forms of the disease that may never cause harm and those who ha...NASA satellites detect 'glow' of plankton in black waters
... satellites that simply measure ocean color cannot distinguish phytoplankton blooms within such patches. Although satellites cannot directly measure nutrients in lakes, rivers, wetlands and oceans, remote sensing technology measure the quantities of plankton. Scientists can then calculate how much nutrient migh...One-hundred-fifty year old lessons of John Snow still relevant today
...d Snow realized that disease-causing agents didn't distinguish between the rich and poor. Many at that time believed cholera was a disease that only attacked the poor. "He practiced on a diverse population, from the poor and indigent to the well-to-do," Rachman said. "His sense of cholera as a waterborne agent t...Review article makes case for a new source of cells in the body
...lls in craniofacial development and the genes that distinguish VENT cells from others. To help explore their multi-potential status, he wants to answer questions such as: "Can you take VENT cells from elsewhere in the embryo, move them to the craniofacial area and supplement function?" The contributions of VENT...Other highlights in the August 18 JNCI
...al for malignancy. This method may be able to help distinguish clinically relevant groups of neuroblastomas, according to the authors. Contact: Miguel Alaminos, Spanish National Cancer Centre, 34-95-822-8146 or 34-95-824-4034, malaminos@histolii.ugr.es Study Identifies Possible New Target for Anticancer Drug ...Using statistics to decipher secrets of natural mutation
... different organisms and discern patterns that can distinguish models of mutational mechanisms. According to Green, the statistical approach offers a powerful way to analyze models that are very difficult or impossible to solve analytically. "Until recently," he said, "the state of the art in the molecular evol...Scientists identify compounds that mimic calorie restriction
...transcript profile, can be used like a bar-code to distinguish a unique profile from other genetic changes that occur in the body. The researchers compared the profile of calorie restriction with the profiles produced by compounds known to have some properties similar to calorie restriction, including the abilit...Small animal imaging gives cancer clues
...cancers comparable to humandisease. The system can distinguish different stages of cancer andcould lead to more sensitive screening tests for cancer-fightingdrugs. Positron emission tomography (PET) is widely used for detecting andfollowing cancer in human patients. It works by following short-livedradioactive ...Oldest evidence for processing of wild cereals: starch grains from barley, wheat, on grinding stone
..., size, and other features make it possible to distinguish starch grains from different plant species. Evidence associated with an oven-like hearth also found at the site suggests that dough may have been baked in much the same way that modern nomadic tribes in the region still prepare seed cakes. Grinding...