Ultrastructural examination of apoptotic SupT1 cells by transmission electron microscopy (8 day pi). In (A), two apoptotic nuclei in cells that do not show viral particles.

In (B), note the presence of empty capsids (asterisk) in the cytoplasm of an apoptotic cell (see also the insert at the top left). All cells show chromatin condensation, a characteristic feature of apoptosis. N, nucleus; cy, cytoplasm. Original magnifications: (A) ×4,400 and (B) ×8,800; insert in (B) ×40,000.