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Tag: "frozen" at biology news

First frozen egg baby born in Canada

...he first successful birth in Canada resulting from frozen eggs. A team led by Professor Seang Lin Tan, Chair...d eggs collected from her ovaries, which were then frozen in liquid nitrogen at ?96ºC. After a period of two months, the eggs were thawed and fertilized with ...

Technique may allow cancer patients to freeze eggs, preserving fertility before starting treatment

...sive Cancer Center have found. By having her eggs frozen before she begins cancer treatments, a woman can preserve the hope of one day having a baby. Freezing eggs is one thing; thawing them safely so they can lead to pregnancy is the challenge. In the past, efforts to freeze a woman's eggs, or oocytes, h...

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

...explains. Unlike the other males, whose trunks are frozen in midair, Billy Idol has placed his flat on the ground, the tip pointing inward toward his front feet. Billy and the others remain still like statues for several seconds. Finally, the spell is broken, and the quartet of bulls ambles back to the wate...

Human Eggs Can Develop From Ovarian Surface Cells In Vitro

...eiving through in vitro fertilization. Eventually, frozen OSE cells from younger females may be preserved for later production of fresh eggs. This may prevent the occurrence of fetal genetic alterations, which are often associated with an advanced maternal age. In addition, a colonization of premenopausal o...

Deep thinking: Scientists sequence a cold-loving marine microbe

...ranes that are fluid and functional--rather than a frozen chunk of biomass--below the freezing point. The ge...robial life on other planets, as well, such as the frozen surface of Mars or one of Jupiter's moons, Europa. As yet, however, there's little chance that decip...

Novel plague virulence factor identified

... of the worms can be grown quickly and can even be frozen and used later. "C elegans lives in the soil, so it continually comes into contact with bacteria and other microbes," Aballay said. "It has a highly developed system for not only recognizing bacteria, but also responding to them. The ability of its ...

New Look at DNA Hints at Origin of UV Damage

... of the worms can be grown quickly and can even be frozen and used later. "C elegans lives in the soil, so it continually comes into contact with bacteria and other microbes," Aballay said. "It has a highly developed system for not only recognizing bacteria, but also responding to them. The ability of its ...

Lands surface change on Alaska tundra creating longer, warmer summers in Arctic

...gins to melt, ancient organic matter that has been frozen for thousands of years is exposed, potentially adding more carbon dioxide to the atmosphere. The result is a positive feedback loop that could continue to raise temperatures in the region and further lengthen the snow-free period each year. Since...

Virginia Tech, Nanjing Institute researchers discover half-billion year-old fossils

...ient life have a wealth of fossils and impressions frozen in rocks that they can study from as far back as 540 million years ago ?when animals with shells and bones began to become plentiful. But evidence of complex life older than 540 million years is scant and difficult to study. Now, a research team fro...

Disappearing arctic lakes linked to climate change

...infiltrate into the ground because of the ice-rich frozen soils found in permafrost. Data gathered from the latest measurements indicate that warming temperatures lead to increased numbers of surface water bodies in the colder permafrost regions. Many lakes decreased in size or dried up completely, while o...

Israeli scientists successfully transplant frozen-thawed ovaries in sheep

...[1] that they have successfully transplanted whole frozen and thawed ovaries in sheep, retrieved oocytes fro...o the upper arm, but in neither case was the ovary frozen and thawed first[2]. Another much-researched option is freezing and transplanting thawed ovarian ti...

Freeze-dried mats of microbes awaken in Antarctic streambed

...feature intermittent streams that link glaciers to frozen lakes on the valley floor, she said. The streambeds contain photosynthetic microbes known as cyanobacteria, which collectively occur as thin, rubbery mat-like structures that can spread several meters across the streambed surface. The experiment beg...

India's smoking gun: Dino-killing eruptions

...hered from radiometric dating with magnetic fields frozen in the rocks. Volcanic rocks record information about the Earth's magnetic field with magnetic minerals that align with Earth's field like millions of tiny compasses before the lava cools. When the lava solidifies, the compasses are locked in place. ...

North & South American researchers find architectural abnormalities in T. cruzi ribosome

...to crystallize and damage the ribosomes. Then, the frozen sample is imaged with an electron beam in the transmission electron microscope. A CAT scan takes readings of a single body from different angles to reconstruct its three-dimensional images, but the microscope catches hundreds of ribosomes at differe...

New antifreeze protein found in fleas may allow longer storage of transplant organs

...sistance in plants, and inhibit crystallization in frozen foods. ...

Center releases new public survey on stem cells

...ments that would otherwise be discarded or kept in frozen storage; a ban on the use of Federal funds to create new stem cells using these embryos currently is in effect, and various pieces of legislation pending in Congress would either extend this ban or relax it. A survey of 2,212 Americans conducted Se...

Bugs expose underground carbon traffic system 10 times more important than fossil fuel burning

...es. The cores were then filled with soil which was frozen -80oC to kill any other insects/microfauna and inserted into experimental grassland to enable colonization by AM fungi from the surrounding plants. Twenty mites from the order Collembola, which would view the AM mycelia as food stuff, were introduced...

Scientists sequence DNA of woolly mammoth

... as it demonstrated that the analyzed material was frozen for more than 10,000 years before the maximum of t...dicates that any organism that has been trapped in frozen ice or a permafrost environment for up to one million years will be an open book to the researchers....

Microbes under Greenland Ice may be preview of what scientists find under Mars' surface

...nia, Berkeley, study of methane-producing bacteria frozen at the bottom of Greenland's two-mile thick ice sh...ey calculated that the measured amount of Archaea, frozen and barely active, could have produced the observed amount of excess methane in the ice. "We found ...

Scientist measures role of science's coolest player: The snow

... snow, total regions of permafrost-the permanently frozen soil of the cold north-are likely to expand in area. Without the insulating effect of snow, in other words, soils in colder regions of the world are in fact likely to get much colder. The surprising result has implications for the health of permafros...

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