EBER expression.

Demonstration of EBER-like reactivity in formalin-fixed, paraffin embedded sections of malignant lymphomas by in situ hybridization using labeled oligonucleotide probe. Panels A and C show low- and high-power views, respectively, of positive nuclear staining in the ocular tumor of lymphomatous rabbit C2175, and panels B and D show low- (original magnification, ×40) and high-power (original magnification, ×400) views of the tumor infiltrates of the heart from rabbit C2180.