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Methylene blue stains both the nucleus and the cytoplasm of eukaryotic cells. The nucleus typically stains a deeper color.

Its purpose is to make cells show up against their background.

Methylene blue is also used to stain DNA or RNA after electrophoresis.

It can be purchased at most aquarium shops for under 10 dollars.

In some cases food dye might be suitable.

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15y ago

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