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.
Tkachuk, a 26-year-old Arizona native, is the captain of the NHL’s Ottawa Senators and has played his entire career in the Canadian capital. He and other members of the U.S. team returned from Italy this week and are resuming the NHL season. Some attended Trump’s State of the Union speech in Washington on Tuesday night and were cheered by those in attendance.
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BBC Radio 2 has named Stirling as this year's location for its flagship live music festival.