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Fibroblast cells showing cytoskeleton

Fibroblast cells. Fluorescent light micrographof two fibroblast cells, showing their nuclei(purple) and cytoskeleton. The cytoskeleton ismade up of microtubules of the protein tubulin (yellow) and filaments of the protein actin (blue). The cytoskeleton supports the cell'sstructure, allows the cell to move and assists inthe transport of organelles and vesicles withinthe cell. Fibroblasts are cells forming connectivetissue, and are responsible for secretingconnective tissue proteins such as collagen.Magnification: x980 when printed 10cm wide.. Stunning Photo Gifts From Science Photo Library