Definition of toluidine blue
: a basic thiazine dye that is related to methylene blue and is used as a biological stain
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“Toluidine blue.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/toluidine%20blue. Accessed 25 Jun. 2022.
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Time Traveler for toluidine blue
The first known use of toluidine blue was in 1898
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