2024-07-18 23:35:29动物植物
模块化设计:对人类线粒体中蛋白质工厂的新见解

The "power plants" of living cells, the mitochondria, probably evolved through endosymbiosis: A bacterium migrated into a primordial cell and eventually developed into an organelle that provides the cell with energy, among other things. Mitochon

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2024-07-18 23:23:49动物植物
日本蜜蜂用翅膀拍打入侵巢穴的蚂蚁,把它们赶走

A trio of environmental specialists at the National Institute for Environmental Studies, in Japan, has found that Japanese honeybees sometimes resort to slapping ants with their wings to prevent their entry into their nest.

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2024-07-18 23:09:56动物植物
研究表明,古代病毒助长了现代癌症

Peek inside the human genome and, among the 20,000 or so genes that serve as building blocks of life, you'll also find flecks of DNA left behind by viruses that infected primate ancestors tens of millions of years ago.

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2024-07-18 22:58:42动物植物
研究追踪了6600万年的哺乳动物多样性

When trying to understand the present, it's helpful to look to history. New research from the University of Nebraska–Lincoln examined the fossil record going back 66 million years and tracked changes to mammalian ecosystems and species diversity on the N

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2024-07-18 22:44:09动物植物
研究发现,棘冠海星幼虫以有毒蓝藻为食

Researchers have uncovered an under-the-sea phenomenon where coral-destroying crown-of-thorns starfish larvae have been feasting on blue-green algae bacteria known as "sea sawdust."

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2024-07-18 22:32:02动物植物
科学家发现,最濒危的鱼类研究最少

The most threatened reef fish are also the most overlooked by scientists and the general public. That is the startling finding of a team of scientists led by a CNRS researcher.

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2024-07-18 22:20:49动物植物
研究发现,虱子对无笼家禽造成重大危害

Lice have been found feeding on the skin and blood of free-range chickens, which are infected at much higher rates than caged flocks. This finding could have implications for states like California, where all egg production is cage-free.

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2024-07-18 22:07:43动物植物
科学家们发现了与鱼群行为有关的大脑回路

A flock of migrating geese glides through the summer sky in an unmistakable "V" formation… a thundering herd of bison rumbles across the plains as a formidable group... and a massive school of sardines swims mesmerizingly in unison.

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2024-07-18 21:55:53动物植物
2.1万年前阿根廷屠杀巨型犰狳类哺乳动物的证据

Cut marks on fossils could be evidence of humans exploiting large mammals in Argentina more than 20,000 years ago, according to a study published July 17, 2024 in the open-access journal PLOS ONE by Mariano Del Papa of National University of La Plata, Arg

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2024-07-18 21:44:23动物植物
微生物被发现可以通过将顽固的氟键裂解为碳键来破坏某些“永久化学物质”

A UC Riverside environmental engineering team has discovered specific bacterial species that can destroy certain kinds of "forever chemicals," a step further toward low-cost treatments of contaminated drinking water sources.

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2024-07-18 21:29:53动物植物
南极湖泊中的微生物结构可以揭示更多关于生命如何进化的信息

In the depths of remote Antarctic lakes, communities of microorganisms are thriving where few life forms can survive. Scientists are studying structures formed by these communities to understand more about microscopic life in these extreme environments, w

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2024-07-18 21:15:21动物植物
研究确定了调节细胞衰老的RNA分子

A team led by UT Southwestern Medical Center researchers has discovered a new way that cells regulate senescence, an irreversible end to cell division. The findings, published in Cell, could one day lead to new interventions for a variety of conditions as

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