The nuclear envelope is a protective layer made of two membranes that surround the nucleus. It acts like a barrier, controlling what enters and exits the nucleus and helps keep the DNA safe inside. Full definition
A new nuclear envelope forms around each set of chromosomes, and new cell membranes separate the two daughter cells. (sciencedaily.com)
Recent advances include the discovery of a mode by which nontelomeric heterochromatin can acquire chromosome end - protection capacity, as well as expansion of the known repertoire of telomeres and centromeres to include the control of nuclear envelope breakdown and spindle formation. (life-science-alliance.org)
Required to maintain individual mitotic chromosomes dispersed in the cytoplasm following nuclear envelope disassembly (PubMed: 27362226). (abcam.com)