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Tag: "pack" at biology news

Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells

...ls gone wrong. Mitochondria are known as the power pack of cells, energizing them like batteries do flashlight bulbs. "There are hundreds of mitochondria, sometimes thousands, in a cell," says Gourley. "To see them in the old way requires a time-consuming process like fluorescent tagging or a chemical re...

Red delicious, Northern Spy apples have most antioxidants, chemists find

...Red Delicious, Northern Spy and Ida Red, they say, pack a greater wallop of disease-fighting antioxidants ...s could lead to the breeding of hybrid apples that pack a heftier antioxidant punch. The report appears in the June 29 issue of the American Chemical Socie...

Brain Scan Study of Smokers Reveals Signature of Craving

...moking-related images, such as others smoking or a pack of cigarettes. Smokers who noted fewer cravings showed stable brain responses to the same drug cues, despite hours of deprivation. The findings suggest important differences among smokers in brain responses that underlie the smoking habit, the rese...

Deep thinking: Scientists sequence a cold-loving marine microbe

... genes to generate polyunsaturated fatty acids and pack those acids into cell membranes, resulting in membranes that are fluid and functional--rather than a frozen chunk of biomass--below the freezing point. The genome also possesses a number of duplicated genes important to cell membrane biosynthesis. Wh...

'Underground' tunnels discovered as means for communication between immune system cells

...ted time-lapse video, the cells appear more like a pack of wild animals feeding on a carcass. But two things baffled the researchers. Dendritic cells extended their veils even before making physical contact with E. coli, yet macrophages, cells not normally picky about the antigens they engulf, were compl...

Give thanks for the cranberry, say dental researchers

...pes to isolate the compounds within the juice that pack an anti-cavity punch. The substances could then be added to toothpaste or mouth rinse directly. He is working closely with Nicholi Vorsa, Ph.D., a plant pathologist and director of the Blueberry and Cranberry Research and Extension Center at Rutgers,...

Clocking in Pillow Time without the Pillow

...very sleep hour missed adds an extra pound to your pack until it weighs you down. For people without time for a daily eight hours in the sack, drugs that counteract the effects of sleep deprivation could serve as substitutes. In a new study, Sam Deadwyler and colleagues have explored this possibility by ...

Noise And Delays Explain Why Some Genes Oscillate In Activity

...very sleep hour missed adds an extra pound to your pack until it weighs you down. For people without time for a daily eight hours in the sack, drugs that counteract the effects of sleep deprivation could serve as substitutes. In a new study, Sam Deadwyler and colleagues have explored this possibility by ...

There's something fishy about human brain evolution

...ain expansion. And how were hominid babies able to pack on the extra pounds? According to Cunnane their moms were dining on shoreline delicacies like clams and catfish. "The shores gave us food security and higher nutrient density. My hypothesis is that to permit the brain to start to increase in size, t...

Vital ocean prey play active role in environment

...sea ice for food, and as they grow they drift with pack ice. After they metamorphose in late winter and early spring, the juveniles move with the currents back to inshore waters. In summer, the juveniles are found inshore of the adults. The life cycle thus keeps krill in younger stages separate from adult...

New MRI technique shows emphysema in asymptomatic smokers

...tory greater than 18 pack-years (equivalent to one pack of cigarettes per day for 18 years) showed significant abnormalities compared to nonsmokers. CT was performed after MRI, to allow comparison between the two modalities. Even though CT is the more established modality in the investigation of lung dis...

Where have all the butterflies gone?

...in the mountains. The rain has led to a heavy snow pack in the Sierra Nevada, which typically means a good year for butterflies in the high country. Snow protects the dormant insects from cold and drying. But the snow came late in the season, meaning that many of the overwintering insects may have been ki...

Smoking changes brain chemistry

...tient's smoking history: the greater the number of pack years (one pack per day for one year equals one pack year), the lower the NAA level. "The ACC is involved in med...

New evidence of early horse domestication

...s a lot more practical and explicable if they used pack horses. Later people of the same region adopted shepherding and cattle raising, said Olsen. That created a more nomadic culture, since sheep and cattle are not well suited for sub-zero climates and therefore needed to be taken south in winter. The ...

Cigarette smoking impedes tendon-to-bone healing

...s in the bloodstream about equivalent to smoking a pack to a pack and a half of cigarettes per day. "So these would have been heavy smokers," Galatz says. "But ano...

Stanford discovery may help predict when toxoplasma can be deadly

...y what happens to make some strains of Toxoplasma pack such an extra punch. By conducting a comprehensive scan of gene sequences of Toxoplasma strains, postdoctoral scholars Jeroen Saeij, PhD, and Jon Boyle, PhD, first authors of the paper in the Dec. 15 Science, searched for the gene or genes respon...

Squid-inspired design could mean better handling of underwater vehicles

...volcanoes near Hawaii to the frigid depths beneath pack ice in the North and South poles. However, while the torpedo shape of some underwater vehicles ensures rapid deployment and high cruising speeds with minimal energy, their hydrodynamic design makes them more difficult to maneuver or dock at low spee...

The connector rotation hypothesis? Phage do not pack their DNA by rotation

...bly stage in which a powerful molecular motor must pack the DNA genome into the virus's preformed shell (t...nd colleagues were able to observe capsids as they pack their DNA to directly test the connector rotation hypothesis. They found that it is more than likely...

Scientists genetically engineer tomatoes with enhanced folate content

Leafy greens and beans aren't the only foods that pack a punch of folate, the vitamin essential for a healthy start to pregnancy. Researchers now have used genetic engineering--manipulating an organism's genes--to make tomatoes with a full day's worth of the nutrient in a single serving. The scientists ...

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