[Interaction of Sindbis virus with a culture of cells producing oncornavirus]

Electron microscopy and biophysical methods were used for examinations of primarily trypsinized chick fibroblast cell culture spontaneously producing C-type oncornavirus at 1, 6, and 24 hours after inoculation with Sindbis virus. During the first 6 hours rapid maturation and release of oncornavirus from cells were observed. At later intervals oncornavirus production was inhibited. It is assumed that in the system under study, biosynthesis of oncornavirus and Sindbis virus occur separately.