The World of the Microscope: Cells and Bacteria
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The cell is the basic unit of living organisms. Bacteria are among the smallest organisms and cannot be seen without a microscope. Antony van Leeuwenhoek created a microscope that could visualize... (more info)

The cell is the basic unit of living organisms. Bacteria are among the smallest organisms and cannot be seen without a microscope. Antony van Leeuwenhoek created a microscope that could visualize bacteria.

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