TABLE 1.

Cell cycle parameters for CR34, NF859, and MG1655 growing in M9 minimal medium with different thymidine concentrations

Thymidine (μg/ml)	CR34 (Thy−)			NF859 (Thy+)			MG1655
	τa (min)	ΔG (%)	C period (min)	τ (min)	ΔG (%)	C period (min)	τ (min)	ΔG (%)	C period (min)
0.1	NTb			40	50	50	54	59	79
0.5	NT			39	51	49	54	53	72
0.8	66	87	134	NT			NT
1	62	90	130	40	51	50	54	45	63
2	56	52	73	40	49	49	54	41	56
5	64	50	79	36	55	49	54	35	49
10	60	45	70	36	55	49	54	35	49

^aτ, time for mass doubling and DNA duplication. 

^bNT, not tested.