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In 1931 ____________ built the first Transmisssion Electron Microscope, allowing structures of the cell to be seen for the first time.

A. Robert Hooke
B. Ernst Ruska
C. Anthony Van Leeuwenhoek
D. Louis Pasteur

2 Answers

4 votes
B. Ernst Ruska built the first transmission electron
User Alexandre Pauzies
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2 votes

Answer:

Ernst Ruska

Step-by-step explanation:

User Little Bird
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