%0 Journal Article %A Clark-Walker, G. D. %A Primrose, S. B. %T Isolation and Characterization of a Bacteriophage Si1 for Spirillum itersonii %D 1971 %J Journal of General Virology, %V 11 %N 3 %P 139-145 %@ 1465-2099 %R https://doi.org/10.1099/0022-1317-11-3-139 %I Microbiology Society, %X Summary A large icosahedral bacteriophage, Si1, infectious for Spirillum itersonii has been isolated and characterized. It contains double-stranded DNA which has 53% G+C, no unusual bases and a molecular weight 2ยท6 x 107. %U https://www.microbiologyresearch.org/content/journal/jgv/10.1099/0022-1317-11-3-139