Neutral red

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

Neutral red (toluylene red, Basic Red 5, or C.I. 50040) is a eurhodin dye used for staining in histology. It stains lysosomes red. It is used as a general stain in histology, as a counterstain in combination with other dyes, and for many staining methods.

Excerpt from the Wikipedia article “Neutral red”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: LHcheM, CC BY-SA 3.0, via Wikimedia Commons.