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Tag: "observe" at biology news

The secret lives of whales

... today. New technologies that allow researchers to observe the deep-sea, now point to another unintended lega...its location and position it in space and time and observe multiple animals that are 100’s of miles apart—cohorts of humpback singers moving coherently?and wat...

Scientists discover the cellular roots of graying hair

...theloss of color. The scientists were surprised to observe that, at thesame time and the same rate, differentiated, pigmented melanocytes wereshowing up in the follicle at the location where the stem cellsresided. Since they were in the wrong place, the pigmented cells likelydid nothing to maintain the mice’...

Fundamental Finding Yields Insight into Stem Cells, Cancer; Opens Door to Drug Discovery

...theloss of color. The scientists were surprised to observe that, at thesame time and the same rate, differentiated, pigmented melanocytes wereshowing up in the follicle at the location where the stem cellsresided. Since they were in the wrong place, the pigmented cells likelydid nothing to maintain the mice’...

Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.

...theloss of color. The scientists were surprised to observe that, at thesame time and the same rate, differentiated, pigmented melanocytes wereshowing up in the follicle at the location where the stem cellsresided. Since they were in the wrong place, the pigmented cells likelydid nothing to maintain the mice’...

Nano-Probes Allow an Inside Look at Cell Nuclei

... of light based on their size, they can be used to observe the transfer of material between cells. "We can have two different quantum dots in two different cells, and watch as the cells exchange their mitochondria," says Chen, adding that their technique paves the way for imaging a host of other long-term b...

Solutions that reduce death of marine life reeled in by International Smart Gear Competition

As the world prepared to observe Earth Day, World Wildlife Fund and its partners in the International Smart Gear Competition announced three new winning solutions to prevent the accidental maiming and killing of marine mammals, juvenile fish, and sea turtles that become ensnared by ...

NIH Researchers Discover How Insulin Allows Entry of Glucose Into Cells

... with the membrane. Next, the researchers plan to observe cells taken from mice having conditions resembling human disorders of insulin metabolism. Eventually, the researchers hope to obtain cell samples from volunteers who have been diagnosed with type 2 diabetes and insulin resistance. ...

Researchers discover underwater volcano

...as less than 10 feet, the researchers were able to observe the unique biological community surrounding the newly formed volcanic cone. Much of Nafanua is covered with yellow "fluff," microbial aggregations that are produced by microscopic life feeding on chemical energy from the volcano's hydrothermal syste...

Findings have implications for tracking disease, drugs at the molecular level

...t light so strongly that it is readily possible to observe a single nanoparticle. Fourkas, in collaboration w...chnique is that it paves the way for being able to observe behavior in living tissues at the single molecule level," said Fourkas. "The fluorescent molecules c...

Natural Killers Could Lead to New Hepatitis Treatments

...vital fluorescence microscopy that enabled them to observe in real time the behavior of the tagged cells in the livers of mice. “The startling discovery was that these NKT cells just move within the sinusoids intravascularly,?said Littman. By contrast, he said, immune cells in the lymph nodes and spleen per...

A probe, not an echo

... system), but only allows the user to subjectively observe where an object is in relation to other observable structures. Therefore, it is operator-dependent. The HUTT system transmits an extremely short ultrasonic pulse (about 250 nanosecond) of 4-12 megahertz frequency (far above human hearing) and picks ...

Virologists make major step towards understanding the process of HIV infection

... of the virus. The labeling permits scientists to observe the behavior of the virus when it enters a host ce...ar machinery and appended to the desired site. To observe the interaction of HIV with the host cell, there had also been attempts to label the virus with GFP....

New Species of Coral Discovered Off Southern California

... of the virus. The labeling permits scientists to observe the behavior of the virus when it enters a host ce...ar machinery and appended to the desired site. To observe the interaction of HIV with the host cell, there had also been attempts to label the virus with GFP....

Atmosphere may cleanse itself better than previously thought

...novative laser technique that at last allows us to observe these chemicals in action, we now theorize that th...way. More precisely, it allowed the researchers to observe a portion of the spectrum that the molecules absorb ?a portion that has been something of a blind sp...

Protein synthesis can be controlled by light, opening way for new scientific, medical applications

... protein synthesis in subcellular compartments and observe the effects, then we could infer the role of local protein synthesis in development," said Dore. Generally speaking, there are few research tools available that are location-specific, so the new method adds a potentially powerful tool for scientists...

Mosaic mouse technique offers a powerful new tool to study diseases and genetics

...are designed to give researchers an opportunity to observe what happens when a specific gene is removed from a small cluster of cells in a living animal. With MADM, cells carrying an altered gene of interest actually turn green for easier observation. "We use a green fluorescent protein," Luo says. "So now ...

Using nanoparticles, in vivo gene therapy activates brain stem cells

...ologies of Paris), the UB researchers were able to observe the brain cells expressing genes without having to sacrifice the animal. Then the UB researchers decided to go one step further, to see if they could not only observe, but also manipulate the behavior of brain cells. Their finding that the nanoparti...

Scientists take aim at virulent bacteria by decoding machinery of key control enzyme

...yme in complex with DNA, which has allowed them to observe exactly how the enzyme finds its target on bacterial DNA. The Dam enzyme begins by binding non-specifically to DNA, but once it fastens tightly, it glides smoothly down the entire DNA molecule like fingers sliding down a guitar neck searching for th...

New tool reveals secrets of migrating cells

...bly signaling one another. In our current work, we observe cells that we believe have already gotten a signal beelining away," Robey said of her studies in the thymus, the immune system gland that weans baby T cells into activated helper, or CD4, cells and killer, or CD8, cells primed for combat with viral i...

Researchers create infectious hepatitis C virus in a test tube

... reproduce an infectious form of HCV that they can observe in cell cultures. The method developed by Rice and his colleagues, including scientists at the Massachusetts Institute of Technology and the Scripps Research Institute, changes that. "The hallmark of viruses is their ability to exist in a form outsi...

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