Jack Dorsey lays off 4,000, says others will do same 'within the next year'
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A widespread bacterial defence system called SNIPE is shown to localize to the cell membrane, where it identifies and cleaves the DNA of infecting phage as it is injected into the bacterial cell.
Working with Prof John Plane at the University of Leeds, they detected that the amount of lithium in the atmosphere at around 100km above Earth increased by a factor of 10.