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Figure 6 Note the rather bland appearing,
closely inter-digitating spindle shaped cells. Many cell
types can be used to demonstrate the cytopathic effects
of stealth viruses.
Figure 7 The cells become enlarged and
rounded, with a tendency to form large clusters. The
cytoplasm develops a foamy vacuolated appearance.
Intracellular pigmented material will commonly
develop, especially in long term cultures.
Figure 8 showing the accumulation of
dark pigmented material and formation of long
ribbon shaped structures. Relatively normal
appearing cells, that grew outfrom the top left
cluster, can be seen.
Figure 9 The culture was from a
patient involved in a1996 outbreak of
stealth virus infection in the Mohave Valley
region of the US. The marked vacuolization
is similar to that shown in Figure 4.
Figure 10 Unlike infections
with many conventional viruses, it is
rather uncommon to see intact viral
particles.
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