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Bacteria are difficult to see when they are not stained because they are almost colorless.

1. Staining a slide enables a high contrast between the bacteria and the background.

2. It defines the bacterial morphology (size, shape and arrangement).

3. It enables us to observe structures like flagella, capsules and endospores.

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12y ago
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14y ago

Yes sometimes it is necessary to add a dye to make something visible or stand out. When you look at onions, you can add iodine to make the cells stand out. The colored stain is a dye that won't react with the object on the slide.

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Q: Why do scientists stain slides when looking at them?
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it helps in staining many slides at a time, as when we put many slides on a rack we can pour dye simoultaneously on all the slides and it will also help in reducing loss of extra dye or stain.


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What is staining rack?

Staining rack is used to hold many glass slides at a time. By putting slides on a staining rack, you can pour dye simultaneously and it will help to reduce extra dye or stain.


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