The interior of the nucleus does not contain any membrane-bound sub compartments , its contents are not uniform , and a number of `` sub-nuclear bodies '' exist , made up of unique proteins , RNA molecules , and particular parts of the chromosomes .
Inside the nucleus there are no membrane-bound sub-compartments . Its contents are not uniform , and a number of `` sub-nuclear bodies '' exist , made up of unique proteins , RNA molecules , and particular parts of the chromosomes .