SINCE 1828
Helly's fluid
noun
Hel·ly's fluid
| \ ˈhelēz-\
Definition of Helly's fluid
: a fixing fluid consisting of an aqueous solution of mercuric chloride, potassium dichromate, sodium sulfate, and neutral formalin used in microscopy especially for preservation of the cytoplasm and mitochondria
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Merriam-Webster unabridged
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