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Papanicolaou stain

Pronunciation: pa-pa-ni'ko-low

Definition: a multichromatic stain used principally on exfoliated cytologic specimens and based on aqueous hematoxylin with multiple counterstaining dyes in 95% ethyl alcohol, giving great transparency and delicacy of detail; important in cancer screening, especially of gynecologic smears.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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