TABLE 2.

Dca is required for transformation of gonococci but not meningococci

Strain	Strr CFU ml−1/total CFU ml−1a
N. gonorrhoeae
FA19	8.3 × 10−3
LS1	3.5 × 10−3
LS3	<7.8 × 10−8
FA19 recA::ermC	<2.6 × 10−8
N. meningitidis
NMB	1.8 × 10−3
NMLS3	1.8 × 10−3

^aThree independent experiments, each done with 0.5 μg of DNA, produced similar results.