Cell cytoskeleton. Coloured scanning electron micrograph (SEM) of the cytoskeleton (blue) and nuclei (green) of cultured cells. The cytoskeleton is the cellular 'skeleton' found within a cell's cytoplasm. It maintains cellular shape, allows some cellular mobility and is involved in intra- cellular transport and cellular division. The nucleus of a cell contains deoxyribonucleic acid (DNA), the genetic material of the cell.
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