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כתבות אחרונות מאתר 'Phys'
Phys

Tiny new dinosaur Foskeia pelendonum fills in an evolutionary gap‎

An international team has described Foskeia pelendonum, a tiny Early Cretaceous ornithopod from Vegagete (Burgos, Spain), measuring barely half a meter long. Led by Paul-Emile Dieudonné (National University of Río Negro, Argentina), the study reveals an unexpectedly derived skull and positions Foskeia near the origin of the European herbivorous lineage Rhabdodontidae. The study is published in Papers in Palaeontology.

08:14
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Phys

Single-cell microdevice isolates and profiles extracellular vesicles over weeks‎

Extracellular vesicles and particles are central to how cells communicate, especially in cancer, where they help shape metastasis and treatment resistance. However, most existing methods analyze vesicles in bulk, masking differences between individual cells. Some single-vesicle techniques offer particle-level detail but lose information about the cell that produced them. Other single-cell platforms face practical limits, such as short culture times or signal mixing between cells. These limitations make it difficult to study how individual cells behave over time. Based on these challenges, there is a clear need for technologies that can culture single cells long-term while isolating and analyzing the vesicles each cell produces.

06:44
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Phys

Signaling output genes shed light on evolutionary crossroads of vertebrates‎

New research from the University of St Andrews has discovered a crucial piece in the puzzle of how all animals with a spine—including all mammals, fish, reptiles and amphibians—evolved. In a paper published in BMC Biology, researchers found an intriguing pattern of gene evolution which appears to be significant for the evolutionary origin and diversification of vertebrates.

03:43
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Phys

Satellite study reveals 24.2 billion ton annual groundwater loss in High Mountain Asia‎

A recent satellite-based study has uncovered alarming declines in groundwater storage across High Mountain Asia (HMA), widely known as the "Asian Water Tower." This critical water source, which sustains agricultural irrigation, urban water supplies and ecological security for hundreds of millions of people in more than a dozen downstream countries, is depleting at a staggering rate of approximately 24.2 billion tons per year.

00:42
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Phys

Moving closer to 'true' equine IVF for clinical use‎

Three years ago, Penn Vet researchers reported a major breakthrough in equine assisted reproduction. Katrin Hinrichs, Harry Werner Endowed Professor of Equine Medicine, and colleagues developed a technique that would allow successful conventional in vitro fertilization (IVF) with horses. In conventional IVF, the sperm does its job of finding and fertilizing a mare's egg, or an oocyte, in a Petri dish. Developing a method to motivate stallion sperm to do this—let alone do it consistently—had eluded researchers for decades.

23:12
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