pyro-nine

pyronine

[pahy-ruh-neen]
noun Histology.
a xanthine dye used for detecting the presence of RNA.

Origin:
1890–95; < German Pyronin, originally a trademark

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American Heritage
Medical Dictionary

pyronine py·ro·nine (pī'rə-nēn') or py·ro·nin (-nĭn)
n.
Any of several xanthene dyes that are ferric chloride complexes and are used in combination with methyl green to stain for RNA, DNA, and bacteria, and as a tracking dye for RNA in electrophoresis.

The American Heritage® Stedman's Medical Dictionary
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