Table 3.

The expressions of the crd genes quantified by q-RT-PCR*

	ATCC31749/pBQ(E)	ATCC31749/pBQcrdR(E)	ATCC31749/pBQ(S)	ATCC31749/pBQ crdR( S)
crdA	0.2373 ± 0.0635	1.0944 ± 0.0956	244.2038 ± 18.3645	923.5690 ± 29.6543
crdS	0.4050 ± 0.1022	2.7739 ± 0.1185	86.7645 ± 4.2966	176.6229 ± 9.5607
crdC	0.4972 ± 0.9503	2.2787 ± 0.1263	4.5239 ± 0.3371	14.5744 ± 1.0027
crdR	14.9112 ± 1.0359	654.8556 ± 20.4256	29.2068 ± 1.8553	193.1226 ± 11.2094

*The data are means of three independent determinations, and the unite of value is copies per ng total RNA(copies/ng RNA) E: strain in exponential phase, S:strain in stationary phase.