2023-11-20 16:46:41动物植物
实验室中产生了合成基因组超过一半的酵母

Researchers have combined over seven synthetic chromosomes that were made in the lab into a single yeast cell, resulting in a strain with more than 50% synthetic DNA that survives and replicates similarly to wild yeast strains. The team present the half-s

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2023-11-20 16:46:41动物植物
一种深海鱼类激发了研究人员开发超分子光驱动机械的灵感

The vision system, evolved over millions of years, is highly complex. To make vision sensitive throughout the whole range of visible wavelengths, Nature employs a supramolecular chemistry approach. The visual pigment, cis-retinal, changes its sha

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2023-11-20 16:46:41动物植物
Idai vs.Impalas:一项新研究实时显示是什么帮助哺乳动物在自然灾害中幸存

When Cyclone Idai swept through Mozambique's Gorongosa National Park in May 2019, one of nature's deadliest forces encountered one of the most technologically sophisticated wildlife parks on the planet. Princeton researchers and colleagues from around t

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2023-11-20 16:46:40动物植物
动物是如何获得条纹和斑点的

Nature has no shortage of patterns, from spots on leopards to stripes on zebras and hexagons on boxfish. But a full explanation for how these patterns form has remained elusive.

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2023-11-20 16:46:40动物植物
终于发现了:奇怪的产卵哺乳动物60年后终于被重新发现

More than sixty years after it was last recorded, an expedition team has rediscovered an iconic, egg-laying mammal in one of the most unexplored regions of the world. Attenborough's long-beaked echidna, named after famed broadcaster Sir David Attenboroug

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2023-11-20 16:46:40动物植物
新的研究表明,植物可能能够从人类活动中吸收比以前预期更多的二氧化碳

New research published today in leading international journal Science Advances paints an uncharacteristically upbeat picture for the planet. This is because more realistic ecological modelling suggests the world's plants may be able to take up m

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2023-11-20 16:46:39动物植物
味觉的进化:早期的鲨鱼能够感知苦味物质

A research team from the University of Cologne, in collaboration with colleagues from the Leibniz Institute for Food Systems Biology in Freising, has discovered a receptor for bitter taste in twelve different cartilaginous fish (sharks and rays). The rece

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2023-11-20 16:46:01医药卫生
在诊断前七年,眼部扫描可检测出帕金森氏症的迹象

指示帕金森氏症存在的标记;伦敦大学学院和Moorfields眼科医院的一个研究小组已经确定了患者在临床表现前平均七年的疾病。

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2023-11-20 16:44:50医药卫生
研究进一步证明帕金森氏症始于肠道

问问任何一位神经科医生:帕金森病是一种脑部疾病。帕金森氏症的明显症状——无法控制的震颤、动作减慢以及双脚紧贴地面的感觉——都源于大脑中一个有助于控制运动的区域神经元的丧失。

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2023-11-20 16:43:13医药卫生
农村青年酗酒、携带手枪

根据本月发表在《农村健康杂志》上的一项研究,在美国农村,酗酒的青少年在第二年携带手枪的可能性高出43%。

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2023-11-20 16:42:33医药卫生
科学家发现了一种以前未知的细胞分解蛋白质的方式

短寿命蛋白质控制细胞中的基因表达,以执行许多重要任务,从帮助大脑形成连接到帮助身体建立免疫防御。这些蛋白质是在细胞核中产生的,一旦完成它们的工作,就会很快被破坏。

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2023-11-20 16:41:50医药卫生
与早期心脏病发作和中风有关的一组轻微不健康特征

根据2023年ESC大会上发表的研究,具有三种或三种以上不健康特征的中年人,包括腰围、血压、胆固醇和葡萄糖,比同龄人早两年心脏病发作和中风

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