38. केंद्रकद्रव्य एवं कोशिकाद्रव्य के बीच पदार्थों का आदान-प्रदान किन छिद्रों द्वारा होता है
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The nuclear envelope separates the contents of the nucleus from the cytoplasm and provides the structural framework of the nucleus. ... The sole channels through the nuclear envelope are provided by the nuclear pore complexes, which allow the regulated exchange of molecules between the nucleus and cytoplasm.
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