Fig. 1.

Induction of EBV lytic replication in ZHT-converted lymphoblasts. (A) Western blot of 4HT-dependent induction of lytic proteins in B95-8/ZHT cells. (B and C) Gp350 surface staining of 4HT-induced B95-8/ZHT lymphoblasts by fluorescence microscopy (B) and FACS analysis (C). (D) Electron microscopy with negative uranyl acetate staining performed on purified EB virions at ×12,000 magnification. (E and F) Electron microscopy of fixed and stained thin sections of EB virions (E) and NP-40-treated EB virions (F)at ×50,000 magnification.