2024-02-26 16:04:30动物植物
研究人员揭示了细胞如何在内质网再生蛋白质工厂

The synthesis of proteins in the cell is a key process of life. By this means, the genetic code of the genome is translated into the amino acid sequence of proteins. The process is complex—and has been studied in detail for decades.

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2024-02-26 16:04:27动物植物
果蝇的翅膀为伤口的愈合提供了线索

How long it takes for cells to close a fruit fly's wound can tell us a lot about the healing process in the early developmental stages of humans, and potentially treatments that prevent long-term damage.

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2024-02-26 16:04:24动物植物
研究人员发现,与地下水相连的溪流显示出排毒和微生物多样性的改善

Streams with ample connections to shallow groundwater flowpaths have greater microbial diversity and are more effective at preventing toxic forms of metals—often products of upstream mining—from entering and being transported downstream. These streams are

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2024-02-26 16:04:20动物植物
受保护的土地为西非极度濒危的秃鹫提供了最后的立足点

Among the fastest-declining birds in the world, African vultures battle many of the problems commonly plaguing wildlife today, such as habitat loss, hunting, and poisoning, but they also face a more unique set of obstacles.

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2024-02-26 16:04:17动物植物
科学家认为,杀手本能推动了哺乳动物食肉祖先的进化

The evolutionary success of the first large predators on land was driven by their need to improve as killers, researchers at the University of Bristol and the Open University suggest.

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2024-02-26 16:04:15动物植物
瓢虫气味提供了一种更环保的保护作物的方法

The use of pesticides, while beneficial for global food security, wreaks havoc on natural ecosystems and human health. To address this issue, Penn State researchers have turned to an unlikely enforcer to protect crops: the ladybug. The team, led by Sara H

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2024-02-26 16:04:12动物植物
生物分子缩合物:植物铁供应的调控枢纽

Iron is a micronutrient for plants. Biologists from the Institute of Botany at Heinrich Heine University Düsseldorf (HHU) describe in a study, which has now been published in the Journal of Cell Biology, that regulatory proteins for iron uptake behave par

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2024-02-26 16:04:08动物植物
研究人员确定了拟南芥染色质调控的关键参与者

Chromatin is a unique DNA and protein complex that makes up the chromosomes. Specific proteins (histones) wind up the DNA like small cable drums to package the long DNA. A cable drum (consisting of four pairs of histones) with coiled DNA is called a nucle

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2024-02-26 16:04:04动物植物
照顾后代的雄性玻璃蛙睾丸较小

A small international team of animal behavior researchers has found that species of glass frogs whose males help care for offspring tend to have smaller testes than species whose males do not help care for offspring. In their study, published in the journ

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2024-02-26 16:04:02动物植物
巴塔哥尼亚发现的史前哺乳动物物种比预期的要大

A multi-institutional team of archaeologists and paleontologists has unearthed and identified a new species of mammal from the Maastrichtian age. In their paper published in the journal Scientific Reports, the researchers note that the mammal was much lar

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2024-02-26 16:04:00动物植物
研究人员制作核糖体的3D模型,并可视化其制造过程

Human cells contain ribosomes, a complex machine that produces proteins for the rest of the body. Now the researchers have come closer to understanding how the ribosome works.

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2024-02-26 16:03:56动物植物
古生物学家发现一条2.4亿年前的“中国龙”

An international team of scientists from China, the U.S. and Europe has studied new fossils of the marine reptile Dinocephalosaurus orientalis. This research has made it possible to fully describe the bizarre, very impressive animal for the first time.

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