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--Mark Hill 14:36, 19 March 2009 (EST)Note the double-membrane is also called the "nuclear envelope"
* Nuclear pores exist for the import and export of mRNA and proteins.
This second point is not clearly stated. It would have been better to state:
* Nuclear pores exist mainly for the import of proteins and export of mRNA.
Indicating that you understood the direction of shipment.
- The nuclear membrane's structure is maintained by underlying lamins.
Correct, these lamins form the nuclear cytoskeleton.