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Tag: "spot" at biology news

Study casts doubt on 'Snowball Earth' theory

...thesis. But, she said, "finding the one anomalous spot would be quite unlikely," adding that the drill core came from an extensive formation of rocks with similar characteristics. "At what point does an enormous refugium become open ocean?" she asked. Skeptics also may argue that the rocks do not neces...

Fragment of yellow fever virus may hold key to safer vaccine

... bit of virus that people's immune systems need to spot and quash this often-fatal re-emerging disease. The findings may help scientists improve the existing vaccine, which has rare but severe side effects, said Jan ter Meulen, an HHMI international research scholar and associate professor of virology at...

Siberian tigers hang tough

...ystem Partnership Fund, added, "Russia is a bright spot in the conservation of tigers in Asia, and is proof of our belief that a few dedicated individuals, with sufficient motivation and adequate support, can make a difference in the world." Coordinators of the survey effort gathered in Vladivostok today...

Vietnam war technology could aid elephant conservation

...elephant numbers in open savanna cannot be used to spot elephants in dense forest. As a result, the new technique could provide crucial data for reserve planning and management. "Conservation management would be improved by more accurate methods for monitoring and estimating the size of elephant populati...

New defibrillator signals doctor of patient's irregular heartbeat or device malfunction

...ird year in a row that Loyola has achieved the top spot for Heart Care and Heart Surgery in the state. Loyola opened its new 10,000-square-foot Center for Heart and Vascular Medicine on the Loyola University Medical Center campus. Loyola's 3,500-square-foot Sally & Jim Dowdle Electrophysiology Labor...

Deep thinking: Scientists sequence a cold-loving marine microbe

...g up blueprints, this strategy allowed the team to spot any striking distinctions in C. psychrerythraea's amino acid composition, highlighting differences unique to the cold-loving organism. Together, these analyses offer a picture of evolution in action, as C. psychrerythraea uses subtle tweaks in commo...

Life detection instrument passes key test on road to Mars

...nse of Chile's Atacama Desert is the most lifeless spot on the face of the Earth, and that's why Alison Skelley and Richard Mathies joined a team of NASA scientists there earlier this month. The University of California, Berkeley, scientists knew that if the Mars Organic Analyzer (MOA) they'd built could...

Leprosy genome tells story of human migrations, French researchers report in Science

...s of single nucleotides or "letters" at a specific spot in the genome. They found only three spots where useful SNPs occurred. "Finding so few SNPs is pretty unusual. It's the least number of SNPs I'm aware of in any bacterium," Cole said. At each of the three SNP locations, one of four different nucleo...

Atmosphere may cleanse itself better than previously thought

...sorb ?a portion that has been something of a blind spot for scientists, who often detect chemical reactions by perceiving the telltale light frequencies that certain reactions are known to emit or absorb. Many sources of OH radicals strongly absorb UV light, making them easily detectable. However, the wea...

Chimp genome reveals a retroviral invasion

...anscribed into DNA, and then reinserted into a new spot in the genome. Human endogenous retroviruses make up one class of these retroelements. Retroviruses can insinuate themselves into the host's DNA in either soma (nonreproductive cells) or the germline (sperm or egg). If the virus invades a nonreprodu...

Hydrogen and methane provide raw energy for life at 'Lost City'

...studied since the 1970s. Scientists who named the spot Lost City knew they were looking at something never seen before when the field was serendipitously discovered in December 2000 during a National Science Foundation expedition to the mid-Atlantic. This week in Science, researchers publish for the fir...

Brain May Be Less Plastic Than Hoped

...cortical area corresponding to each monkey's blind spot fell silent, generating no activity. The team mea... region of their cortex corresponding to the blind spot would have shrunk.?Instead, though, the silent region remained the same size each time. The neurons ...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...Peering through binoculars, she and Eckert finally spot four male elephants on the horizon. The bulls head straight for the waterhole and begin splashing, spraying and performing a variety of other aquatic antics. Suddenly, and for no apparent reason, the four males step away from the water and freeze in...

Falling ants glide back to trunk to avoid dangers of forest floor

...and on the tree's trunk and climb back to the very spot from which they'd fallen. "I brushed them off the branch with my hand, and I noticed that maybe 20 or 30 of them fell in unison and then made this nice little cascade back to the tree trunk," said Yanoviak via phone from Iquitos. "That's when I real...

Antibiotic Resistant Bacterium Uses Sonar-like Strategy to “See?Enemies or Prey

... foundthat bacteria can use a Sonar-like system to spot other cells (eithernormal body cells or other bacteria) and target them for destruction.Reported in the December 24 issue of Science, this finding explains howsome bacteria know when to produce a toxin that makes infection moresevere. It may lead to ...

New, automated tool successfully classifies and relates proteins in unprecedented way

...sses that underlie disease."Using this approach to spot a protein cluster could help scientistsidentify a common protein structure that enables those proteins togather in one part of the cell, according to Murphy. Getting thisinformation is critical to foil a disease like cancer, where you mightwant to id...

Priming embryonic stem cells to fulfill their promise

... in Nature Methods involved using such amachine to spot solutions of proteins rather than DNA. The UCSDresearchers also refined other parameters so that the technique wouldbe reproducible in other research laboratories."When we talked to our colleagues, it was clear that, whether it'scells in the liver, b...

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