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Tag: "site" at biology news

Gene therapy prevents the onset of diabetic symptoms in mice

...llet form by helicopter in October 1999. The other site served as a control. While the pellets dissolve slowly over five to 10 years, the researchers were surprised to find that by summer 2002, the soil acidity in both the top and lower layers of the test plot neutralized from being highly acidic to mor...

Acid rain causing decline in sugar maples, say researchers

...llet form by helicopter in October 1999. The other site served as a control. While the pellets dissolve slowly over five to 10 years, the researchers were surprised to find that by summer 2002, the soil acidity in both the top and lower layers of the test plot neutralized from being highly acidic to mor...

A new kind of mutation could explain numerous phenotypic variations in various species

... of an "illegitimate" microRNA (miRNA) recognition site in a gene that did not have it in its normal form....ation discovered among sheep exposed a recognition site for two miRNAs that are highly expressed in the muscle. In "mutant" animals, these miRNAs will conse...

Researchers find protein that silences genes

... shows up in the nucleolus, which is precisely the site where ribosomal RNA genes are regulated and where nucleolar dominance occurs. "We found HDA6 at the scene of the crime, which was reassuring," Pikaard said. Ph.D. student Keith Earley in the group characterized HDA6 biochemically and demonstrated...

Race to halt global amphibian crisis boosted by rediscovery of endangered Colombian frogs

...dación ProAves of Colombia purchase the 1,600-acre site to protect it as a nature reserve. Neither of the...five threatened amphibians found nowhere else. The site also is a vital stopover point for declining neotropical migratory birds that breed in the United St...

Nanosecond-scale release of stinging jellyfish nematocysts

...y small (~1 nanogram), a pressure generated at the site of impact is more than 7 GPa, which is in the range of that generated by some bullets, and sufficient to penetrate the cuticle of crustacean prey. The researchers propose that the high speed of discharge is caused by the release of energy stored in t...

Where have all the butterflies gone?

... and 43 individuals on April 18, 2006. At the same site on April 19, 2005, he counted 21 species and 378 butterflies. This winter's weather conditions may have a lot to do with the drop in numbers. The early winter was mild, with not enough cold to end the winter dormancy or "diapause" of most butterflie...

A surprise about our body clock

...t mobilize these cells to race towards the injured site and regenerate the injured heart. Their heart function was dramatically impaired and, 42 days after a heart attack, their hearts dilated to twice the size of the normal mouse heart. However, the heart function of the c-kit defective mice could be res...

Healing the heart with bone marrow cells

...t mobilize these cells to race towards the injured site and regenerate the injured heart. Their heart function was dramatically impaired and, 42 days after a heart attack, their hearts dilated to twice the size of the normal mouse heart. However, the heart function of the c-kit defective mice could be res...

New method confirms importance of fungi in Arctic nitrogen cycle

...om the Arctic LTER (Long Term Ecological Research) site near Toolik Lake, Alaska, in the northern foothill...found that 61-86% of the nitrogen in plants at the site entered through fungal symbionts, "Previous studies at this Arctic site have found a large range of...

UBC researchers find stroke death channel

...s, that brain cell membranes were disrupted at the site of gap junction hemichannels. Gap junctions are co...scientists believed the disruption to occur at the site of glutamate channels. Glutamate is one of the brain's most abundant chemical messengers. However, t...

Bone marrow may restore cells lost in vision diseases

...lysis showed the cells that traveled to the injury site and transformed into RPE indeed had male genetic c...lderly patient's own cells to travel to the injury site to make repairs. "The dogma has been that we're born with a fixed amount of RPE, but there is growi...

All the eggs in one basket

... populations. "The loss of even a single nesting site makes a permanent, irreversible dent in the sea turtle population," says McClenachan. The scientists estimate that today's current population of 300,000 turtles once was as large as 6.5 million adult turtles in the Cayman Islands in the 17th Centur...

Scientists take 'snapshots' of enzyme action

... leaves so that the substrate can bind to the same site on the FAD group. At this moment an oxygen atom from molecular oxygen is attached to the substrate, and the hydride ion obtained from the cofactor combines with the other oxygen atom to form a water molecule, which is released. Once the substrate is ...

Harmful Algal Blooms monitored from space in Chile

...ormation supports our strategic decisions for farm site location. "To obtain the amount of information covered with the EO data, alternative methods will be of considerable higher cost. With in situ measurements you cannot produce a gradient map as obtained with EO images. The value of this information ...

Arctic expedition will investigate alien-like glacier

...rd Pass in a helicopter. He eventually visited the site and noticed the strong smell of rotten eggs that indicated the presence of sulfur. Grasby then visited the in 1999 and 2001 and collected samples of the water and mineral deposits from the spring, which contained new forms of bacteria and an extremel...

Federal testing for mad cow disease a failure, law review editor says

...ts 300,000 cattle for BSE using a $500,000 testing site it had built to USDA specifications. But the agency ruled that the BSE test was licensed only for "surveillance" of animal health, and rejected Creekstone's request because it implied "a consumer safety aspect" that was "not scientifically warranted...

Microbes transform 'safest' PBDEs into more harmful compounds

... a new laboratory study published today on the Web site of the American Chemical Society journal, Environmental Science & Technology . The study is scheduled to appear in the July 15 print issue of the journal. The finding, by a team of environmental engineers at the University of California, Berkel...

Some people would give life or limb not to be fat

...s about obesity. The data was collected from a web site developed for the purpose of the study. People found out about the website by attending a conference, reading articles in which one of the authors was interviewed, or by visiting the Rudd Center website. Of those who responded, three percent were und...

Scientists identify gene involved in stem cell self-renewal in planaria

...l manner, the planarian stem cells migrated to the site of the wound, sensed what was missing and began rebuilding. Regeneration ceased, however, when the stem cell population became depleted. "Had Bruli protein been present, the regeneration process would have continued to completion," Newmark said. "...

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