Table 1. Average specific growth rates and length of cell cycle divisions for the indicated growth periods.

		μ† (Day-1)	μ (hr-1)	tc‡, (Days)	tc (hr)
Brain	24–72 hr	0.149	0.0062	4.65	111.8
	72–144 hr	0.495	0.0206	1.40	33.6
Parental	24–144 hr	0.383	0.0160	1.81	43.4
Liver	24–120 hr	0.430	0.0179	1.61	38.2
	96–144 hr	0.076	0.0032	9.08	218.0
Lung	24–72 hr	0.555	0.0231	1.25	30.0
	72–144 hr	0.354	0.0148	1.96	47.0
Spine	24–120 hr	0.464	0.0193	1.49	35.8
	96–144 hr	0.062	0.0026	11.18	268.3
1oTumor	24–72 hr	0.613	0.0255	1.13	27.2
	72–144 hr	0.142	0.0059	4.89	117.3

^†Denotes average specific growth rate from equation: ln(N_t/N_o) = μt, where N_t is the number of cells at time ‘t’, N_o is the initial number of cells, and t is time.

^‡Denotes the average length of the cell cycle division and is derived from: t_c = ln2/μ.