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Tag: "touch" at biology news

Molecular thermometers on skin cells detect heat and camphor

...central nervous system. Keratinocytes do, however, touch nerve fibers, and it may be through these contacts that the signals are communicated. Investigations into this possibility are ongoing. ### To read the article, "Impaired Thermosensation in Mice Lacking TRPV3, a Heat and Camphor Sensor in the Skin"...

WHO suspends Marburg work, appeals for new funds

...od and other fluids when caring for the ill, don’t touch bodies of the deceased ?transmission within the community can be stopped and the outbreak brought under control. International appeal Specialized international staff and equipment have been deployed rapidly and measures are beginning to have an imp...

While on trail of dioxin, scientists pinpoint cancer target of green tea

... first discovered in green tea to people who never touch the beverage. Isolating the chemicals that protect against cancer would also sidestep questions such as how to take into account different types of teas and different brewing processes, or how much tea one needs to drink. "It's important to find out...

To translate touch, the brain can quickly rearrange its sense of the body

... a matter of seconds how body parts and individual touch sensations are perceived. The work is reported by...dex finger, relative to the forehead. The sense of touch was altered within seconds of applying the vibration, suggesting a very strong and fast link between...

Bitter or sweet? The same taste bud can tell the difference

...ain, but only a few of the cells in each taste bud touch these fibers. The prevailing thought was that cells that don't have a connection to a nerve fiber must have some way of sending a signal to that fiber. But researchers weren't sure how that happened. "We knew that many taste bud cells that have rece...

Scientists use gene transfer technology and common virus to block neuropathic pain in animals

...ensory neurons that transmit pain, temperature and touch signals to and from the brain. Now, scientists at...s called allodynia, which means that even ordinary touch feels painful. In both rats and people, scientists measure allodynia by touching the skin with a ser...

Scientists use gene transfer technology and common virus to block neuropathic pain

...ensory neurons that transmit pain, temperature and touch signals to and from the brain. Now, scientists at...s called allodynia, which means that even ordinary touch feels painful. In both rats and people, scientists measure allodynia by touching the skin with a ser...

Experimental shingles vaccine proves effective in nationwide study

... a cool breeze. Simply dressing and having a shirt touch the side of the body that is affected can be excruciating. Postherpetic neuralgia is difficult to treat. Antiviral medications can speed the healing of shingles and reduce the severity of nerve damage caused by the disease, but only if these medicat...

Plant wounds trigger bacteria

...m one bacterial cell to another when the two cells touch one another, in bacterial congress. The plasmid recognizes organic compounds called phenols that leak out of damaged cells when a plant is wounded. A bacterial protein called VirA acts like an antenna, detecting phenols in a plant wound; the phenols...

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

...as a direct effect on behavior, he adds. "When you touch a hot pan, you immediately draw your hand away. Or, if you place your finger in an infant's palm, the baby will grasp it instinctively." The current research findings might also be relevant for controlling pest populations, which utilize olfactory c...

Algal protein in worm neurons allows remote control of behavior by light

...d ChR2 in mechanosensory neurons, which respond to touch by activating a reflex that causes worms to back up, was sufficient to prompt the backing behavior in response to blue-light exposure. In fact, the ChR2 expression in mechanosensory neurons allowed the backing behavior to occur (in response to light)...

Bats use touch receptors on wings to fly, catch prey, study finds

...long-forgotten theory that bats use their sense of touch for nighttime navigation and hunting. The theory ...on the skin of most mammals, including humans. Bat touch domes are different, however, because they feature a tiny hair poking out of the center. When Zook ...

Picking apart how neurons learn

...D. This result confirms that PICK1 must physically touch the AMPA receptor for LTD to occur. The second critical step in establishing LTD involves a chemical change to the AMPA receptor, called phosphorylation. Mice lacking a small part of the AMPA receptor - the part where phosphorylation is thought to ...

Viral protein helps infected T cells stick to uninfected cells

...infected cells known as T lymphocytes, or T cells, touch uninfected T cells. The finding helps explain ho...oups ?something that normally happens when T cells touch to communicate with one another during an immune response. The findings also suggest that a drug t...

Flu not the only germ threat this time of year

...us lands on another person, or they cough and then touch the faucet or doorknob. RSV, like the common cold,...st a day. If you put your finger in your mouth, or touch your eye, or pick your nose, you're a spreader, to put it bluntly. People share cell phones, they sh...

Researchers unravel DNA tangles and enzyme seamstresses

...molecules are interlinked is shown by the way they touch each other. Interlinked DNA loops tend to touch in an easily recognizable hook-like way, fitting together perfectly; whereas strands of unlinked DNA...

Blood flow in brain takes a twist, affecting views of Alzheimer's

...ly surprising. She said that astrocytes physically touch both synapses ?the spaces between neurons that are crucial to brain activity ?and blood vessels. In fact, "footprints" of astrocytes are literally all over blood vessels in the brain: Portions of astrocytes known as "astrocytic endfeet" wrap around n...

A case of mistaken molecular identity

... "This was her idea, that the same antibodies that touch the heart cells might also block rhodopsin," said Levin. Matsumoto conducted thorough eye examinations of 45 Chagas disease patients with heart problems. She found that under bright conditions, the Chagas patients performed comparably to 50 healthy...

APS lecturer shows rare video of 'teacher-student' immune cell interactions in live animal

...s time interval, T cells first migrate rapidly and touch every dendritic cell for only a few minutes. This initial phase lasts about eight hours. Then the T cells pick one antigen-presenting dendritic cell and sticks to it for many hours. After one day, the T cells disengage from the dendritic cell and be...

Ritalin packs punch by elevating norepinephrine, suppressing nerve signal transmissions

...o the equation?" Researchers in this area keep in touch and share their results, Waterhouse said. One group, for example, is looking at the drug's effects on dopamine and norepinephrine in the prefrontal cortex, he noted. These results will eventually have to be combined, as changes in one area of the bra...

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