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好的梯子软件
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PNAS commits to immediately and freely sharing research data and findings relevant to the novel coronavirus (COVID-19) outbreak.
See the free collection of PNAS coronavirus papers and learn more about our response to COVID-19.
See the free collection of PNAS coronavirus papers and learn more about our response to COVID-19.
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Opinion: Restoring vigor to the biomed research workforce in the midst of COVID-19
Researchers need safe return-to-work programs coupled with an infusion of stimulus funds and appropriate testing.
Image credit: Wikimedia Commons/National Institutes of Health.
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Image credit: Ifremer/Victor6000/Momarsat 2017.
News Feature: Finding a vaccine for misinformation
With deliberate deception a growing threat online, social scientists are devising ways to fight back with “cognitive inoculations.”
Image credit: Dave Cutler (artist).
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Fish storage architecture in ancient Florida
Watercourts were used to store live surplus fish in ancient Florida, a study suggests.
Image credit: Zachary S. Randall (Florida Museum of Natural History, Gainesville, FL).
Predictive models for life outcomes
Models to predict six life outcomes based on data collected over 15 years suggest that the use of predictive models in criminal and social systems may need to be reevaluated, along with the assumption that life trajectories can be predicted.
Image credit: iStock/DNY59.
Pattern analysis in forensic identification
A study assesses the reliability of a forensic identification technique that matches purportedly distinct patterns of wear and tear on denim jeans.
Image credit: Sophie J. Nightingale and Hany Farid.
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Origins of the kinetochore
Eelco Tromer and Jolien van Hooff explain the origins of the kinetochore in eukaryotic cells.
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QnAs with NAS member Leslie B. Vosshall
Image credit: Howard Hughes Medical Institute/Brian Ach.
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- Eco-evolutionary control of pathogens
- The synthesis of xyloglucan, an abundant plant cell wall polysaccharide, requires CSLC function
- Protein nanoribbons template enamel mineralization
- The esophageal gland mediates host immune evasion by the human parasite Schistosoma mansoni
- Parkinson’s disease-related phosphorylation at Tyr39 rearranges α-synuclein amyloid fibril structure revealed by cryo-EM
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- The airborne lifetime of small speech droplets and their potential importance in SARS-CoV-2 transmission
- Future of the human climate niche
- Cell entry mechanisms of SARS-CoV-2
- Vertebrates on the brink as indicators of biological annihilation and the sixth mass extinction
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