Which of the following is NOT a component of the nucleolus?
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Correct answer: Nuclear pore complexes
The nucleolus consists of three morphologically distinct regions: the fibrillar center (where rDNA is transcribed), the dense fibrillar component (where early rRNA processing occurs), and the granular component (where ribosome subunits are assembled). Nuclear pore complexes are embedded in the nuclear envelope and are entirely separate from the nucleolus.
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