Other References:
Young FE, Smith C, Reilly BE. Chromosomal location of genes regulating resistance to bacteriophage in Bacillus subtilis. J Bacteriol. 1969 Jun;98(3):1087–97. DOI: 10.1128/jb.98.3.1087-1097.1969. PMID: 4977981. PMCID: PMC315300