Figure 4.

Detection of EBV DNA released in the colture medium of induced Jijoye cells. Jijoye cells were induced with or without 3-ABA as described in the Methods. Viral DNA purified from the colture medium was digested with BamH1 and analyzed by Southern blot with a DIG-tailed probe specific for the BamH1 Z region of the EBV genome. The values in the graph were obtained by densitometric measurements of the 1700 bp BamH1 Z fragment of the viral DNA collected in the supernatant of Jijoye cells induced in the absence (filled circles) or in the presence (open circles) of 3-ABA.