%0 Journal Article %A Hamilton, R. C. %A MacGregor, A. %A Pye, D. %T A Marsupial Oncovirus? %D 1979 %J Journal of General Virology, %V 44 %N 2 %P 535-539 %@ 1465-2099 %R https://doi.org/10.1099/0022-1317-44-2-535 %I Microbiology Society, %X SUMMARY A virus-like particle was observed in two continuous cell lines derived from the marsupial Sminthopsis crassicaudata (Fat-tailed Dunnart). The development of the particle was similar to the development of D-type oncoviruses. Initially, a crescent of nucleoid material was observed near the nucleus in the region of the Golgi apparatus. This crescent developed into a doughnut-shaped A-type particle which migrated through the cytoplasm towards the cell membrane where it budded either into a smooth membrane cytoplasmic vacuole or from the cell membrane. Only enveloped A-type particles were observed; no mature B-type, C-type or D-type particles were detected. %U https://www.microbiologyresearch.org/content/journal/jgv/10.1099/0022-1317-44-2-535