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Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals. It was first published in 1880, is currently circulated weekly and has a subscriber base of around 130,000. Because institutional subscriptions and online access serve a larger audience, its estimated readership is 570,400 people.Source
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A new breed of scientist, with brains of silicon

A new breed of scientist, with brains of silicon

EMERYVILLE, CALIFORNIA—If this is the biology laboratory of the future, it doesn’t look so different from today’s. Scientists in white lab coats walk by with boxes of frozen tubes. The chemicals on the shelves—bottles of pure alcohol, bins of sugar, protein, and salts—are standard issue for growing microbes and manipulating their genes. You don’t even notice the robots until you hear them: They sound like crickets singing to each other amid the low roar of fans.The robots work for Zymergen, a biotechnology company that moved into this former electronics factory on the eastern shore of...

July 5, 2017
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Embattled spider biologist seeks to delay additional retractions of problematic papers

Embattled spider biologist seeks to delay additional retractions of problematic papers

After many colleagues recently raised concerns in blogs and tweets that behavioral ecologist Jonathan Pruitt had fabricated the data behind a slew of provocative results regarding animal personalities and social spiders, he denied the charges, saying any problems were inadvertent mistakes. Now the biologist’s lawyer has sent letters to some co-authors and journal editors, cautioning them to let misconduct investigations at Pruitt’s current and former universities play out before retracting any more of his papers. In addition, an online spreadsheet quickly established to track analyses of...

March 12, 2020
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Brain delivery of therapeutic proteins using an Fc fragment blood-brain barrier transport vehicle in mice and monkeys

Brain delivery of therapeutic proteins using an Fc fragment blood-brain barrier transport vehicle in mice and monkeys

You are currently viewing the abstract.AAAS login provides access to Science for AAAS members, and access to other journals in the Science family to users who have purchased individual subscriptions.Log in via OpenAthens.Log in with your institution via Shibboleth.Download and print this article for your personal scholarly, research, and educational use.Buy a single issue of Science for just $15 USD.Delivering biotherapeutics to the brain is complicated by the presence of the blood-brain barrier (BBB). Kariolis et al. and Ullman et al. developed a transport vehicle (TV) consisting of an Fc...

May 27, 2020
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SARS-CoV-2 infection protects against rechallenge in rhesus macaques

SARS-CoV-2 infection protects against rechallenge in rhesus macaques

An understanding of protective immunity to SARS-CoV-2 is critical for vaccine and public health strategies aimed at ending the global COVID-19 pandemic. A key unanswered question is whether infection with SARS-CoV-2 results in protective immunity against re-exposure. We developed a rhesus macaque model of SARS-CoV-2 infection and observed that macaques had high viral loads in the upper and lower respiratory tract, humoral and cellular immune responses, and pathologic evidence of viral pneumonia. Following initial viral clearance, animals were rechallenged with SARS-CoV-2 and showed 5 log10...

May 20, 2020
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Galactic flash points to long-sought source for enigmatic radio bursts

Galactic flash points to long-sought source for enigmatic radio bursts

On 28 April, as Earth’s rotation swept a Canadian radio telescope across the sky, it watched for mysterious millisecondslong flashes called fast radio bursts (FRBs). At 7:34 a.m. local time an enormous one appeared, but awkwardly, in the peripheral vision of the scope. “It was way off the edge of the telescope,” says Paul Scholz, an astronomer at the University of Toronto and a member of the Canadian Hydrogen Intensity Mapping Experiment (CHIME). Because of its brightness, the team knew its source was nearby. All other FRBs seen so far have erupted in distant galaxies—too far and too fast...

June 8, 2020
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Dolphins learn unusual hunting behavior from their friends

Dolphins learn unusual hunting behavior from their friends

In the crystal clear waters of Shark Bay in Western Australia, scientists have noticed bottlenose dolphins engaging in an unusual behavior: They guide fish into the empty shells of giant snails, bring the shells to the surface, and then shake them vigorously to dislodge the prey into their open mouths—like a person polishing off a bag of popcorn. That extra effort, known as “shelling,” gets them a guaranteed meal.Because the dolphins (Tursiops aduncus) use the shells as a trap, this is the second known case of these marine mammals using tools. (The first was reported in 1997 when...

June 25, 2020
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Oldest fossil of modern birds is a ‘turducken’

Oldest fossil of modern birds is a ‘turducken’

You are currently viewing the summary.AAAS login provides access to Science for AAAS members, and access to other journals in the Science family to users who have purchased individual subscriptions.Log in via OpenAthens.Log in with your institution via Shibboleth.Download and print this article for your personal scholarly, research, and educational use.Buy a single issue of Science for just $15 USD.Go to a Cajun restaurant in New Orleans, and you might be offered a slice of turducken: a fancy dish of chicken stuffed inside of a duck stuffed into a turkey. Now, paleontologists have their own...

March 20, 2020
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Structural basis for translational shutdown and immune evasion by the Nsp1 protein of SARS-CoV-2

Structural basis for translational shutdown and immune evasion by the Nsp1 protein of SARS-CoV-2

SARS-CoV-2 is the causative agent of the current COVID-19 pandemic. A major virulence factor of SARS-CoVs is the nonstructural protein 1 (Nsp1) which suppresses host gene expression by ribosome association. Here, we show that Nsp1 from SARS-CoV-2 binds to the 40S ribosomal subunit, resulting in shutdown of mRNA translation both in vitro and in cells. Structural analysis by cryo-electron microscopy (cryo-EM) of in vitro reconstituted Nsp1-40S and various native Nsp1-40S and -80S complexes revealed that the Nsp1 C terminus binds to and obstructs the mRNA entry tunnel. Thereby, Nsp1...

July 17, 2020
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Non-neuronal expression of SARS-CoV-2 entry genes in the olfactory system suggests mechanisms underlying COVID-19-associated anosmia

Non-neuronal expression of SARS-CoV-2 entry genes in the olfactory system suggests mechanisms underlying COVID-19-associated anosmia

Altered olfactory function is a common symptom of COVID-19, but its etiology is unknown. A key question is whether SARS-CoV-2 (CoV-2) – the causal agent in COVID-19 – affects olfaction directly, by infecting olfactory sensory neurons or their targets in the olfactory bulb, or indirectly, through perturbation of supporting cells. Here we identify cell types in the olfactory epithelium and olfactory bulb that express SARS-CoV-2 cell entry molecules. Bulk sequencing demonstrated that mouse, non-human primate and human olfactory mucosa expresses two key genes involved in CoV-2 entry, ACE2 and...

July 24, 2020
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Revamped cancer drug starves tumors in mice

Revamped cancer drug starves tumors in mice

Tumors are hogs, gobbling nutrients to fuel their runaway growth, and for decades researchers have tried to develop drugs that cut off their food supply. A study out today shows that an updated version of a failed cancer drug can not only prevent tumor cells from using an essential nutrient, but also spur immune cells to attack the growths.“It’s a pretty striking paper,” says cancer biologist Ralph DeBerardinis of the University of Texas Southwestern Medical Center in Dallas, who wasn’t connected to the study. “With a single drug, you can in effect starve the tumor and beef up the immune...

November 7, 2019
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