FIG. 2.
Formation of intracisternal L particles and passage into the RER. Budding of condensed tegument at the inner nuclear membrane (arrows in panels A and B) resulted in perinuclear L particles (arrowhead in B). An L particle (arrow) within a distended RER profile continuous with the nuclear envelope is shown in panel C, as is an extracellular virion. Bars, 150 nm in panels A and C and 250 nm in panel B. N, nucleus.