Table 1.

Some properties of active and dormant Mtb cells.

Characteristic	Active cells	Dormant cells 4.5 months (D1)	Dormant cells 13 months (D2)
CFU, cells/ml	(5 ± 2) × 107	(1 ± 0.5) × 104	0
MPN, cells/ml	1.2 × 108-mean 3.7 × 107-low* 4.2 × 108-high*	9.3 × 107-mean 1.8 × 107-low* 4.2 × 108-high*	1.5 × 106-mean 4.5 × 105-low* 4.2 × 106-high*
H3- Uracil inc. rate, CPM/mg wet cell weight	3,623 ± 52	0	0
cAMP, pmol/mg wet cell weight	124 ± 4	2 ± 1	0
14C-asparigine inc. rate CPM/mg wet cell weight	340 ± 20	0	0
DCPIP reduction, nmol DCPIP min−1 mg−1 wet cell weight	0.11 ± 0.03	0.016 ± 0.003	0
Protein amounts in cytosol, mg/g wet cell weight	3.6 ± 0.2	2.13 ± 0.2**	2.55 ± 0.2**
Protein amounts in membrane fraction, μg/g wet cell weight	76.2 ± 5	39 ± 5**	20.7 ± 5**

^*95 percent confidence intervals.

^**Dormant cells were 10 times washed before protein determination.