The “walk-through cell” is the model of a human cell magnified approximately 300,000 times. The ratio of 1:300,000 corresponds to the size of a small hot-air balloon (diameter 42.3 meters) versus the size of the Earth (diameter approx. 12,700 kilometers).
The model shows in as much detail as possible the inner structure of the cell and its subdivision into different areas and structures. The cell invites exploration: When you feel it and look more closely at its constituent parts, you find out a lot of details about the various parts and the cell as a whole.
Individual cell structures are shown somewhat larger or smaller than other elements either for practical purposes or for didactic reasons.