RT Journal Article SR Electronic(1)YR 1977 T1 Addendum JF Journal of General Virology, VO 35 IS 3 SP 598 OP 598 DO https://doi.org/10.1099/0022-1317-35-3-598-a PB Microbiology Society, SN 1465-2099, AB , UL https://www.microbiologyresearch.org/content/journal/jgv/10.1099/0022-1317-35-3-598-a