Tab. 2. Micronuclei frequencies measured in samples exposed to graded doses of x-rays and cultured at T=0 and T=24 hours post irradiation. The average frequencies and SEM calculated for each data point is also shown.

	T=0 h Experiment				T=24 h Experiment
	Dose				Dose
Donor	0Gy	0.5Gy	2Gy	4Gy	0Gy	0.5Gy	2Gy	4Gy
D1	0.014	0.030	0.029	1.324	0.027	0.039	0.116	1.514
D2	0.011	0.052	0.490	0.943	0.008	0.037	0.131	1.010
D3	0.034	0.099	0.602	0.896	0.032	0.115	0.571	1.072
D4	0.015	0.061	0.480	0.998	0.011	0.060	0.507	1.122
D5	0.016	0.089	0.550	1.147	0.029	0.104	0.715	1.491
D6	0.018	0.060	0.522	1.500	0.029	0.074	0.550	1.624
D7	0.026	0.083	0.60	0.93	0.012	0.116	0.62	0.978
D8	0.007	0.064	0.530	0.948	0.015	0.101	0.494	1.139
D9	0.011	0.090	0.728	1.494	0.019	0.097	0.855	1.603
D10	0.019	0.088	0.504	0.685	0.015	0.106	0.489	0.703
D11	0.012	0.078	0.597	1.440	0.011	0.095	0.672	1.875
D12	0.012	0.073	0.508	0.897	0.019	0.080	0.483	1.179
Average	0.016	0.072	0.512	1.101	0.019	0.085	0.517	1.276
SEM	0.002	0.006	0.048	0.079	0.002	0.008	0.062	0.098