RT Journal Article SR Electronic(1)YR 1979 T1 Addendum JF Journal of General Virology, VO 44 IS 1 SP NP OP NP DO https://doi.org/10.1099/0022-1317-44-1-NP PB Microbiology Society, SN 1465-2099, AB , UL https://www.microbiologyresearch.org/content/journal/jgv/10.1099/0022-1317-44-1-NP