All living beings are made up of tiny microscopic units called cells. While towns and cities vary greatly in size, no matter where they are in the world, they share many similar features. Likewise, despite the vast variety of life forms and cell types, different shapes and sizes, all cells have many features in common.
Travel from outer space on a journey of discovery, into the depths of a single cell.
Cell City in more depth
Cell structure
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The structure of a cell resembles the structure of a city. Take closer look with our cell interactive. Read more : Cell structure
OU on the BBC: Cell City - Meet the Cell City scientists
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Meet the scientists who explain the link between cities and the structure of our bodies Read more : OU on the BBC: Cell City - Meet the Cell City scientists
Cells are like cities
Production team
From the nucleus to the cell membrane - we explore the similarities between a cell's structure and a city. Read more : Cells are like cities
![The old city wall [Image: Elke Wetzig on Wikimedia]](/openlearn/files/ole/ole_images/places/europe/european-cities/berlin-city-wall-inline/berlin, city wall, inline_0_0.jpg)
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