Key points are not available for this paper at this time.
Small, DNA-containing particles were separated from preparations of a simian adenovirus. These particles differed antigenically from the adenovirus. Replication of the particles in cell cultures was obtained only when theywere inoculated simultaneously with adenoviruses. This suggests that these adenovirus-associated particles behave as defective viruses.
Atchison et al. (Fri,) studied this question.