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. 2001 Aug;183(15):4643–4647. doi: 10.1128/JB.183.15.4643-4647.2001

TABLE 2.

Use of a merodiploid to generate null mutations at ccmABCDG or cycA

Strain/gene No. of colonies found with genotype:
Loss of function (Tcs) Merodiploid (Spr Tcr) Wild type (Sps Tcs)
CYCA2/cycA 24,913 42 45
CCMG2/ccmG 0 39,985 15
CCMA2/ccmA 0 19,956 44