Polyadenylic Acid in Visna Virus RNA

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Science  30 Mar 1973:
Vol. 179, Issue 4080, pp. 1328-1330
DOI: 10.1126/science.179.4080.1328


Visna virus 70S RNA contains long stretches of polyadenylic acid [poly(A)]. The homogeneity in length of poly(4) regions is observed in 70S RNA from visna virus and all RNA tumor viruses tested, and not with other types of RNA. By this criterion visna virus resembles RNA tumor viruses.