Cell nucleus
The nucleus is the largest cellular organelle in animal cells.
In mammalian cells, the average diameter of the nucleus is approximately 6 micrometres (µm), which occupies about 10% of the total cell volume. The viscous liquid within it is called nucleoplasm (or karyolymph), and is similar in composition to the cytosol found outside the nucleus. It appears as a dense, roughly spherical or irregular organelle. The composition by dry weight of the nucleus is approximately: DNA 9%, RNA 1%, Histone Protein 11%, Residual Protein 14%, Acidic Proteins 65%.
Claustrum
The claustrum is made up of various cell types differing in size, shape and neurochemical composition. Five cell types exist and a majority of these cells resemble pyramidal neurons found in the cortex Within the claustrum, there is no organization of cell types compared to the cortex and the somas of the cells can be a pyramidal, fusiform or circular shape. The principal cell type found in the claustrum is Type 1 cells, which are large cells covered in spiny dendrites.