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Tag: "tracking" at biology news

Fast test for low blood flow in dogs detects early heart trouble

...alists have developed a fast and accurate means of tracking blood that has been slowed down by narrowing of the coronary arteries. Researchers say it took them less than half the time of exercise stress tests and echocardiograms currently used to find early warning of vessels more likely to become blocked a...

Scientists explore how complex organs develop from a simple bud

...his process in mouse kidneys generated a real-time tracking procedure which has significant implications for genetic manipulation. Ultimately, scientists hope analysis of branching morphogenesis will lead to the design of a computer program that is able to virtually reconstruct the complete process of orga...

History-hunting geneticists can still follow familiar trail

...n of Science validate the approach, which involves tracking sequences of mitochondrial DNA, also known as mtDN...utations enter the genetic code of all species. By tracking similarities and differences of mtDNA, scientists gain insight about the size of groups and how they...

New data from NIH lab confirms protocol to reverse type 1 diabetes in mice

...e current work. NIH researchers used cell lineage tracking in the form of Y-chromosomal fluorescence in situ hybridization (FISH), in combination with insulin staining, to follow the fate of male spleen cells transplanted into female recipients. The female mice that received male donor cells consistently sho...

Pure carbon nanotubes pass first in vivo test

... targeted to specific organs. In another, they are tracking the longer-term behavior and effects of nanotubes in research lab animals. "This research grew out of Smalley’s vision, and he followed our progress and offered daily guidance, even from his hospital bed at M.D. Anderson," Cherukuri said. “Up to h...

Melatonin improves mood in winter depression

... happens flying westward. Some people appear to be tracking to the earlier dusk of winter, causing a similar amount of misalignment but in the phase-advance direction. Symptom severity in SAD patients correlated with the misalignment in either direction. The treatment of choice for most SAD patients is brigh...

Researchers find that bumblebees' flower choice matters

...n. Karron's lab uses several innovative methods of tracking monkey flower mating, and all hinge on where the pollen comes from. Pollen allows the flowers, which contain both male and female reproductive organs, to produce seeds. Plants can only produce seeds from their own species' pollen. The pollen from ...

Scientists resuscitate a 5 million-year-old retrovirus

...as," says Heidmann. "This work will be helpful in tracking down the role of retroviruses in these human diseases." ...

Dragonfly migration resembles that of birds, scientists say

...y 11 Biology Letters, is based on datagenerated by tracking 14 green darner dragonflies with radiotransmitters weighing only 300 milligrams -- about a third as much as apaper clip. Green darners are among the 25 to 50 species of dragonfliesthought to be migratory among about 5200 species worldwide. The team ...

Researcher studies, treats military with 'silent disease'

...rcher in Washington, D.C., has been working toward tracking how servicemembers respond to treatment for the "silent disease" hepatitis C. Dr. Maria Sjogren, a retired Army colonel and hepatologist, which is a doctor who specializes in treating liver disease, has enrolled 90 active-duty servicemembers in her ...

Even when faint, ovary scent draws sperm cells

...y controlling the chemical gradient and accurately tracking chemotactic events. This combination led to greater repeatability in the experimental conditions over the course of the assays, which is currently not possible with conventional assays. These results are an important first step toward having an easy-...

A dichotomy in migration patterns found for sea turtles in east Atlantic

...--obtained by newly-improved methods for satellite tracking of the adult turtles' geographical movements and diving patterns--show that the sexually mature adult population also includes oceanic animals and thereby reveal that adults in the eastern Atlantic occupy very different habitats and undertake two dis...

How satellite tracking revealed the migratory mysteries of endangered Atlantic loggerhead turtles

...nternational team describe how they used satellite tracking systems to follow the journeys of ten turtles from...t who attached the tag. For more information about tracking sea turtles, visit http://www.seaturtle.org/tracking ...

U of M researchers find immune-activating cells in intestines

...oject. Researchers at the University developed a tracking system that allowed them to identify when T-cells are activated in response to a salmonella infection. T-cells are one type of white blood cell involved in the body's immune system that helps fight infection. The researchers found a tiny populati...

Radiation-armed robot rapidly destroys human lung tumors

...otion. As a result of the unique real-time tumor tracking capabilities of their upgraded CyberKnife, the res...e of radiation due to lack of sufficient real-time tracking accuracy in other, more conventional radiation therapy machines. Treating lung tumors with the enh...

Creating a window on 'oceans in motion'

...e meeting will help determine priority species for tracking ?from salmon to whales and from polar bears to pen... Pacific Pelagics), who have forged the process of tracking large open ocean animals with tags that report in via satellite whenever they surface. TOPP has to ...

New tool tracks brain development in babies

...n on conventional MRI. The team then applied fiber tracking to construct a 3-D visualization of the brain's wh... a group of newborns has been evaluated with fiber tracking at birth and at three months. At birth, fiber tracking showed a different fiber pattern in eight of...

Northern birds are fatter!

...ams (Simon Fraser University, Canada) who has been tracking migrating birds for several years. "This research ... Alaska: 80 birds were fitted with radio-telemetry tracking devices and a further 400 had blood samples taken to give measurements of fattening rate. Williams ...

Marrow-derived stem cells deliver new cytokine to kill brain tumor cells, offer protection

... enables certain neural stem cells to develop this tracking ability and genetically engineered neural stem cells to transport several cytokines ?proteins that regulate immune responses ?to track down and destroy glioma cells. In 2002, the scientists reported that they had produced central nervous system cell...

'Scent of a woman' tells male redback spiders to find a mate

...wn in any animal. "It shows that males are really tracking the selection pressures that they're facing in an environment -- they're aware of male density and the amount of competition they're going to be facing," says Michael Kasumovic, a PhD candidate in the UTSC laboratory of Professor Maydianne Andrade. "...

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