All USA & Canada articles – Page 92
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NewsPackaging tray can signal Salmonella contamination before food is unwrapped
Researchers have created a new packaging tray that can signal when Salmonella or other dangerous pathogens are present in packages of raw or cooked food such as chicken.
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NewsArtificial cells show that ‘life finds a way’
Scientists studying a synthetically constructed minimal cell that has been stripped of all but its essential genes have found it can evolve just as fast as a normal cell.
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NewsScientists develop all-species Covid test
In an advance that will help scientists track coronavirus variants in wild and domesticated animals, researchers report they can now detect exposure to the SARS-CoV-2 virus in any animal species.
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NewsScientists uncover secrets of bacteria threatening Vidalia onion production
Researchers have confirmed which genes in the bacterial pathogen Pantoea ananatis high virulence cluster are essential and which genes contribute partially to a disease that causes rotting symptoms in Vidalia onions.
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NewsNew CRISPR gene editing approach opens up more of the genome
Scietnists have come up with a new way to identify diverse CRISPR RNA variants that can specifically home in on challenging areas of DNA to target for editing. The new approach opens up more of the genome for editing, enabling the repair of mutations associated with more diseases.
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NewsNearly half of TB cases in prisons worldwide go undetected
In the first global assessment of tuberculosis among incarcerated people, a new study found consistently high TB case rates and low case detection in prisons.
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NewsImmune-boosting therapy helps honey bees resist deadly viruses
Scientists have successfully tested a novel way of boosting honey bees’ immune systems to help them fend off deadly viruses, which have contributed to the major losses of the critical pollinator globally.
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NewsCRISPR-like system in eukaryotes can edit the human genome
The first RNA-guided DNA-cutting enzyme found in eukaryotes, Fanzor could one day be harnessed to edit DNA more precisely than CRISPR/Cas systems.
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NewsNanoparticle may improve mRNA cancer vaccines
Tests in mice with melanoma and colon cancer show the tiny particle creates an ‘army’ of immune cells that carry vaccine’s instructions, say the researchers.
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NewsMolecular insights may inform new treatments for drug-resistant TB
Researchers have used state-of-the-art imaging to examine two new compounds that target ATP synthase, potentially stopping TB bacteria from producing the energy they need to survive.
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NewsSquash bugs devour each other’s poo to stock their microbiome
Researchers have found that, to acquire healthy gut bacteria, young squash bugs innately seek out and eat the faeces from older squash bugs.
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NewsDigital test directly measures HIV viral load
Researchers have developed a time and cost-efficient digital assay that can directly measure the presence of HIV in a single drop of blood.
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NewsResearchers can use ultrasound to control orientation of small particles, including bacteria
Using ultrasound technology and a nozzle, scientists have separated, controlled and ejected different particles based on their shape and various properties, with implications for drug delivery and bioprinting.
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NewsAutism-specific metabolic pathways linked to gut microbes
A reanalysis of previous studies has identified autism-specific metabolic pathways associated with particular human gut microbes - these were also seen elsewhere in autistic individuals, from their brain-associated gene expression profiles to their diets.
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NewsResearchers reveal how Leishmania parasite uses immune cells as Trojan Horse
A new study found that the parasite targets a receptor on the surface of the neutrophil to gain access to the cell, and once inside the parasite resists the neutrophils’ pathogen-killing molecules.
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NewsRule-breaking anoxic bacteria infected with viruses
Researchers investigating why green and purple bacteria in northeast Washington didn’t obey the usual rules found they had genes in their metagenome that came from viruses.
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NewsLupus flare-ups linked to Ruminococcus blautia gnavus blooms in gut
A new study found that bacterial blooms of the gut bacterium Ruminococcus blautia gnavus occurred at the same time as disease flare-ups in five of 16 women with lupus of diverse racial backgrounds studied over a four-year period.
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NewsComplex life descended from common Asgardian ancestor
Researchers analyzing the genomes of hundreds of different archaea have discovered that eukaryotes trace their roots to a common Asgard archaean ancestor.
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NewsDNA test could broaden access to cervical cancer screening
Researchers have devised a low-cost, point-of-care DNA test for HPV infections that could make cervical cancer screening more accessible in low- and middle-income countries.
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NewsFeral cats shed more toxoplasmosis parasites in areas densely populated by humans
A new analysis suggests that wild, stray, and feral cats living in areas with higher human population density tend to shed a greater amount of the parasite that causes the disease toxoplasmosis.