.
	1.9 MeV X-rays
	Materials: Human peripheral blood (Cutured for 50 hours)
	Source: Linear accelerator produced X-rays with mean energy 1.9 MeV (Unversity of California at Los Angeles (UCLA)
	Dicentrics and rings
	Dose	No. of	Dic+Ring	Distribution of cells with indicated number of dicentrics+rings
	(Gy)	cells		0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26
	0	2295	0	2295
	0.15	576	0	576
	0.5	800	10	790	10
	1	270	16	254	16
	1.5	250	35	216	33	1
	2	150	30	121	28	1
	3	100	58	53	38	7	2
	4	160	141	64	61	28	4	3
	5	200	309	45	63	48	30	12		2
	6	150	292	18	38	50	26	15	2	1
	8	120	370	3	18	29	23	25	14	5	1	1		1
	12	130	734		2	4	9	23	28	31	16	8	6	2	1
	20	120	1160					3	2	11	15	9	21	13	17	9	8	2	3	2	1	2	1
	25	60	707						1		4	3	5	10	6	8	6	3	7	2	4	1
	30	62	812									2	6	5	5	6	11	7	6	7	1	3	1		1	1
	40	20	337												2		3	1	1	3	3	2	2			1	1		1
	50	20	336											1	1		2	2	3		2	4	1	2				1		1
																															.
	Dicentrics
	Dose	No. of	Dic	Distribution of cells with indicated number of dicentrics
	(Gy)	cells		0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26
	0	2295	0	2295
	0.15	576	0	576
	0.5	800	9	791	9
	1	270	13	257	13
	1.5	250	29	222	27	1
	2	150	25	125	25
	3	100	49	59	34	6	1
	4	160	117	7456	61	20	4	1
	5	200	261	27	50	47	24	4		2
	6	150	234	6	24	45	18	10
	8	120	307		4	34	27	20	5	2	1			1
	12	130	609			5	23	24	38	21	10	1	4
	20	120	1007				2	3	6	17	15	21	21	14	10	5	1	4		1
	25	60	593					2	2	3	5	9	9	9	3	4	4	7	2	1
	30	62	688						1	1	3	7	5	10	11	12	2	3	2	3	1	1
	40	20	266
	50	20	302
																															.
	References: (1) Norman A, Sasaki MS (1966). Int J Radiat Biol, 11:321-328.
	(2) Norman A (1967): Multi-hit aberrations. In, Evans HJ, Court Brown WM and McLean AS, eds. "Human Radiation Cytogenetics", North-Holland Publishing Co., Amsterdam, pp.53-57.
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