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Purpose of differential stain/ Also called Gram stain:
Identify different bacteria
- Gram Positive: crystal violet
- Gram Negative: safranin-red or pink bacteria
Total magnification of 100x oil immersion objective (lens) and 10x ocular lens 1000x
Advantage of electron microscopy over light microscopy
Viruses are two small to be seen by light microscopy (0.03-0.3 microns)
Electron microscopy can resolve down to 0.002 microns especially good for visualizing surface structures
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