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.
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Added to that are environmental concerns about how the clothes are produced, and the treatment of factory workers who make them.
不用在除夕当天从早忙到晚，这是妈妈最从容的一个轮值年。我不在意本就稀薄的年味是否更淡，只希望她能随心而行。
A young woman who is battling against social media giants took the stand Thursday to testify about her experience using the platforms as she was growing up, saying she was on social media “all day long” as a child.