ee) Subject No. Age Sex Frag- ments Dicen- trics Rings Exch- anges No. of Chromosome Aberrations No, of Cells with Aberrations mann Chromatid Breaks Isogaps Remarks* Exposed, 175 rad (continued) 63 46 F 1 64 40 F 1 3 68 55 M 2 1 69 14 =F 1 73 28 M 2 2 2 2 74 26 =F 1 1 1 5 78 47 F 1 79 49° M 1 80 56 M 82 60 M 1 64 F 29 75 M 2 41 54 M 1 43 77 ~=OF L 45 42 F 2 48 16 =F 50 44M 51 35 F 1 1 53 18 =F 1 2 59 44 F 1 3 2 Thyroid pathology 3 1 1 ctl 2 Thyroid pathology 3 1 1 1 1 3 2 1 2 2 1 2 2 2 2 2 2 1 1 1 2 1 2 1 3 1 11 2 2 4 1 1 1 Thyroid pathology