| http://www.w3.org/ns/prov#value | - The nucleus of a typical mammalian cell will have about 3000 to 4000 pores throughout its envelope,[7] each of which contains a donut-shaped, eightfold-symmetric ring-shaped structure at a position where the inner and outer membranes fuse.[8] Attached to the ring is a structure called the nuclear basket that extends into the nucleoplasm, and a series of filamentous extensions that reach into the c
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