TABLE 3.

Classification of irradiation-induced inversions according to the characteristics of sequences near the junctions of inverted DNA regions.

Radiation Source (dose; Gy)	Inversion with overlapped sequence	Deletion on overlapped sequence	Insertion on overlapped sequence	Deletion at adjacent area of overlapped sequence	Insertion at adjacent area of overlapped sequence	Total number of inversions
Proton beams (493 Gy)	2 (100 %)	2 (100%)	0	0	0	2
Proton beams (787 Gy)	8 (89%)	6 (67%)	1 (11%)	2 (22%)	1 (11%)	9
Proton beams (995 Gy)	8 (80%)	7 (70%)	0	5 (50%)	0	10
Gamma-rays (900 Gy)	2 (100%)	2 (100%)	0	1 (50%)	0	2