TABLE 2.

Doubling times of strains 168, BS61, BS128, and BS67 under both slow- and medium-growth conditions in the presence and absence of xylose

Strain	Doubling time (min)
	Slow growth		Medium growth
	Without xylose	With xylose	Without xylose	With xylose
168a	107	NDc	47	ND
B61b	105	105	50	42
BS128b	105	110	48	47
BS67b	110	105	42	39

^aThe values are averages for triplicate determinations.

^bThe values are averages for duplicate determinations.

^cND, not determined.