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“#Order from noise: How randomness and collective dynamics define a stem cell” Live-imaging of stem cells randomly moving in the mammary gland tissue. Five consecutive microscopic images of the mammary gland, taken over 8 hours, show the random movement of stem cells that make the cells spread through the tissue. All cells of the same…
“#Norovirus has two alternative capsid structures which change before infection” Credit: National Institutes of Natural Sciences Human noroviruses are a major cause of gastroenteritis outbreaks worldwide. They cause approximately 200,000 deaths each year in developing countries. However, no effective vaccine or antiviral agent for noroviruses yet exists because cell culture methods to produce noroviruses are…
“#Scientists reveal why tummy bugs are so good at swimming through your gut” C. Jejuni cell bodies (red) and flagella (green). Credit: Eli Cohen / Imperial College London Researchers have solved the mystery of why a species of bacteria that causes food poisoning can swim faster in stickier liquids, such as within guts. The findings…
“#How that preprint about a ‘more contagious strain’ of coronavirus changed in peer review” This figure shows the running weekly average counts of sampled SARS-CoV-2 sequences exhibiting the D variant (orange) and G variant (blue) in different continents between January 12 and May 12. Credit: Korber et al. / Cell On May 5, 2020, news…
“#Understanding the circadian clocks of individual cells” Credit: CC0 Public Domain Two new studies led by UT Southwestern scientists outline how individual cells maintain their internal clocks, driven both through heritable and random means. These findings, published online May 1 in PNAS and May 27 in eLife, help explain how organisms’ circadian clocks maintain flexibility…
“#Microbiome confers resistance to cholera” Vibrio cholerae bacterium, which is responsible for causing cholera. Credit: Centers for Disease Control and Prevention Cholera can kill within hours if left untreated, and it sickens as many as 4 million people a year. In a new article in the journal Cell, researchers describe how gut bacteria helps people…
“#Our drinking water was always full of microbes, but the wrong ones might be thriving in the pandemic” Credit: CC0 Public Domain It’s been months. And from rats turning hangry because of coronavirus shutdowns in the U.S. to sea turtles reclaiming tourist beaches in Thailand, life has changed dramatically across the planet. Zooming in where…
“#From Jekyll to Hyde: New study pinpoints mutation that makes E. coli deadlier” Silkworms are used in infection experiments to perform experimental evolution of pathogenic bacteria. Credit: Chikara Kaito As far as humans are concerned, bacteria can be classified as either harmful, pathogenic bacteria and harmless or beneficial non-pathogenic bacteria. To develop better treatments for…
“#Why bacterial toxins are ‘fascinating machines of death’” The illustration shows an overlay of different clostridial toxins. The toxin molecules are highly similar overall, as shown in green colour, except in the receptor binding region, shown in red, which allows them to evolve new receptor preferences. Credit: Mikko Taipale, Roman Melnyk, Jean-Philippe Julien The coronavirus…
“#Researchers use electric fields to herd cells like flocks of sheep” Princeton researchers created a device that uses electrical fields to herd cells like sheep. This time-lapse movie shows a 90-degree turn in a layer of cells viewed under a microscope for eight hours. redit: Video courtesy of the researchers; GIF by Neil Adelantar Princeton…