TABLE 1.

Cell density and capsule thickness in continuous and diluted cultures

Hour	Continuous culture		Diluted culture
	Cell densitya	Capsule thicknessb	Cell density	Capsule thickness
11	9.1 × 107	0.80 ± 0.03	9.1 × 107	0.80 ± 0.03
24	1.5 × 108	1.35 ± 0.06	8.6 × 107	0.90 ± 0.02
35	1.8 × 108	1.37 ± 0.07	6.4 × 107	0.82 ± 0.03
48	2.1 × 108	1.60 ± 0.19	1.0 × 108	1.02 ± 0.05
75	4.3 × 108	1.54 ± 0.08	1.7 × 108	0.93 ± 0.02

^aCell density at the indicated time of growth (cells/ml), determined by counting cells on a hemocytometer.

^bCapsule thickness of India-ink-stained cells, measured using an Axioskop 2 fluorescence microscope (Carl Zeiss). The averages ± standard errors of the means (μm) of 50 cells for each time point are tabulated.