Parts of them produce ribosomes, and they contain histones and chromatids.
The site of coil-shaped Cajal bodies, some of these contain about ten to thirty PML bodies. snRNP proteins are found richly in their splicing speckles, and they can be made visible by DAPI staining. Like mitochondria, these structures are contained in a double membrane, of which the outer one is continuous with the rough endoplasmic reticulum, and they communicate with the cytoplasm through their namesake pores. Parts of them produce ribosomes, and they contain histones and chromatids. For 10 points, name this organelle whose presence distinguishes eukaryotes from prokaryotes, where a cell's DNA is stored.
The site of coil-shaped Cajal bodies, some of these contain about ten to thirty PML bodies.
nucleus