Perhaps the black percipitate which can come with mercury fixatives was not
removed and mistakenly called positive.
Patsy Ruegg

		-----Original Message-----
		From:	ANN MARUSKA [mailto:amarusk1@FAIRVIEW.ORG]
		Sent:	Friday, February 02, 2001 1:30 PM
		To:	histonet@pathology.swmed.edu
		Subject:	EBV

		 << File: ANN MARUSKA.vcf >> Hi histonetters!

		I had an experience recently in which an IHC stain for EBV
(LMP) was run on a B5 fixed tissue and was interpreted as positive.  However
correlating formalin tissue (multiple blocks of identical tissue) has tested
negative.

		Any ideas or similar experiences?

		TIA




		Ann Maruska
		Fairview-University Medical Center
		Mpls. MN  55454
		amarusk1@fairview.org
		612-273-9119