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Marcia
In case you didn't catch it, within the last month I posted a study out of the UK showing that the use of methylene blue dye by the surgeon to identify the
sentinel node and/or the track of the localization needle for biopsy alters the result of the most common method of ER testing such that there appears to be less ER than there truly are. Utilize search and look up methylene blue.
Other more expensive dyes did not, but methylene blue was used overwhelmingly in the US for these purposes.
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