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Test: GRE Subject Test: Biology
| 1. | Which of the following is used to focus the electrons when using an electron microscope? |
Laser
Lens
Phase plate
Reticle
Magnetic field
Courtney
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University of Nebraska- Omaha, Bachelor of Science, Biology, General. University of Nebraska-Omaha, Current Grad Student, Bio...
Kayla
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Grand Valley State University, Bachelor of Science, Biomedical Sciences. Western Michigan University, Master of Science, Biom...
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