Other References:
Sadaie Y, Kada T. Recombination-deficient mutants of Bacillus subtilis. Journal of Bacteriology. 1976 Feb;125(2):489-500. DOI: 10.1128/jb.125.2.489-500.1976 PMID: 812867, PMCID: PMC236107
Weinrauch Y, Dubnau D. Plasmid marker rescue transformation in Bacillus subtilis. Journal of Bacteriology. 1983 Jun;154(3):1077-1087. DOI: 10.1128/jb.154.3.1077-1087.1983 PMID: 6406424, PMCID: PMC217577