Escherichia coli, artwork

Escherichia coli. Artwork of a section throughthe bacterium Escherichia coli ( E. coli ).The cell wall (green, lower left to upper right)contains two membrane layers studded withproteins. A flagellar motor and flagellum is shownat top left. The cytoplasm contains ribosomes(purple), tRNA molecules (maroon), enzymes (blue)and mRNA (white). The lower right portion of theimage shows the cell nucleus (yellow and orange). E. coli is a rod-shaped bacterium(bacillus). It is a normal component of intestinalbacterial flora, but under certain conditions cancause gastroenteritis and other infections.. Stunning Photo Gifts From Science Photo Library

Copyright © David Goodsell/Science Photo Library

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