Scientists have found a new function of the nuclear membrane, the envelope that encases and protects DNA in the nucleus of a cell—it fixes potentially fatal breaks in DNA strands. Previously, the nuclear membrane was thought to be mostly just a protective bubble around the nuclear material, with pores acting as channels to transport molecules in and out. But a recent study has documented how broken strands of a portion of DNA known as heterochromatin are dragged to the nuclear membrane for repair. The reason why we don't experience thousands of cancers every day in our body is because we have incredibly efficient molecular mechanisms that repair the frequent damages occurring in our DNA.

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