watch 2 2

Tag: "watch" at biology news

Snakes' virtual glasses, leopard spots and all-optical transistors

...he pit viper and boa varieties) could keep a close watch on terrorized passengers and crew thanks to small cavities near their snouts known as pit organs. The organs are sensitive to the infrared radiation emitted by warm prey such as rats, rabbits, and Samuel L. Jackson. An optical analysis of pit organs ...

Pathway toward gene silencing described in plants

... future is to develop tools that will enable us to watch the pathway function in live cells using fluorescent proteins and time-lapsed microscopy, to learn even more." ...

Researchers offer clues to how leaves patterns are formed

...tag, he could then shine a light on the leaves and watch how auxin was being transported during vein formation. Thanks to this approach, the team identified cells within individual veins that transport the hormone auxin in two opposite directions. He also showed for the first time that the epidermis of the...

Possible birthplace of malignant brain tumors identified

... matter the most do not have the luxury of time to watch this work unfold. The median interval from diagnosis to death for patients with malignant glioma is currently only 14 months." ...

'Micro-boxes' of water used to study single molecules

... one to several biomolecules. The researchers then watch through a microscope while using infrared lasers as "optical tweezers" to manipulate and combine the droplets (dubbed "hydrosomes") inside a tiny chamber on a slide. A green laser is then used to excite the molecules in individual droplets, and the...

Suicide risk does not increase when adults start using antidepressants, study finds

...or people taking antidepressants. "Keeping a close watch on patients after they begin taking these drugs is a good idea--although not because these medicines are especially risky or dangerous," he says. "Patients need to be monitored to ensure they're getting the right medication in the amount that can hel...

Outsmarting the smartie bug

...e 90 serotypes, and it is important that we keep a watch on the development of this organism. Our work in describing all known variants will help in that surveillance" Two vaccines are available. The first, PCV, recognizes seven forms of the capsule and protects against 82% of infections in children und...

The giant protein titin helps build muscles

... Gautel lab used advanced microscope techniques to watch the molecules link to each other in live cells. "We knew that telethonin acted as a sort of 'cap' or 'bolt' at the end of the titin molecule," Gautel says. "What we couldn't see is how it connected two separate copies of titin together. That's what t...

How marine reserves are giving coral reefs a helping hand

... fun because a large number of sharks turned up to watch us work. Sharks have been heavily fished on most coral reefs so it's always a thrill to visit one of their sanctuaries." ...

Researchers solve mystery of how nuclear pores duplicate before cell division

...thor Daniel Anderson. "This allowed us not only to watch as single pores formed but also to demonstrate that they formed from scratch without the help of already existing pores." In another experiment, the group used four-dimensional confocal microscopy to follow the formation in cultured human cells of ...

How taste response is hard-wired into the brain

... imaging through tiny windows in the fly brains to watch neuronal response when they exposed the flies to sweet or bitter chemicals They found that a whole range of sweet substances selectively switched-on the Gr5a neurons, while a range of bitter substances switched-on the Gr66a neurons. However, the "sw...

How does the brain know what the right hand is doing?

...bs are without looking at them. You don't have to watch your legs and feet when you walk. Your brain knows where they are. For decades scientists have debated two options for how the brain achieves this: (1) the outflow hypothesis says that the brain monitors signals it sends to the muscles telling them ...

New male contraceptive clears hurdle

...l New Delhi. Three data monitoring committees will watch for any safety concerns. Next Steps But Lissner cautions that progress will be slow without sufficient political will. "A reversibility study in men is key," she stresses. "And we're hoping that the Indian government is committed enough to this r...

Science's Breakthrough of the Year: Watching evolution in action

... key to the future of particle physics. Areas to watch in 2006: This year, Science 's predictions for hot fields and topics in the upcoming year include drug and vaccine development for avian flu, RNA-interference in humans, high-temperature superconductors, the microbial family tree, detection of the m...

Sudden change in social status triggers genetic response in male fish, study finds

...onned infrared night-vision goggles and kept close watch on the experimental fish tanks. She soon discovered that dominant males undergo a temporary change in the dark--their bright color turns pale, and their eyebar fades. "But when the lights come on, the dominant male slowly reactivates," she says. "He ...

Researcher says flu responders can learn from 1918 epidemic

...projects and poor neighborhoods of our country and watch as their family and friends, their very communities, die? I don't see why there wouldn't be civil unrest." What is certainly likely to repeat itself is the swiftness with which the flu raced through communities. In many cases, he said, those who are...

UCSD study clarifies insulin's role in blocking release of energy in patients with type II diabetes

...physically view the protein under a microscope and watch how the live cell activates PKA in real time. The PKA is normally activated inside the adipocyte cell, the major site of energy storage in the body where many aspects of metabolism are controlled. There, energy is stored in the form of triglycerides,...

Cultural norms not unique to human societies

...er chimpanzees within their groups were allowed to watch them perform the new skill over a seven-day period before all group members were allowed to use the tool. According to the researchers, group members gathered around the local expert, watched attentively and proved successful when allowed to try the ...

For first time, brain cells generated in a dish

...ase we used a special microscope that allows us to watch living cells over long periods of time through a method called live-cell microscopy, so we've actually witnessed the stem cell give rise to new neurons. Possibly a different method may come up to identify the mother of all stem cells, but we're confi...

Can't serve an ace? Could be muscle fatigue

...ies. "When a tennis player is serving, they don't watch where their shoulders are, they rely on the brain's knowledge of how much effort is required to maintain the best position, to get the ball where it needs to go. "However, if the limbs are fatigued the brain must activate them harder and this leads ...

1 2 3