No. Subject No, Age Sex Fragments Dicentrics Rings Exchanges of Chromosome Aberrations No. of Cells with Aberrations Chromatid Breaks Isogaps Remarks* Exposed, 175 rad (continued) 63 46 F 1 64 40 F 1 3 68 55 M 2 1 69 14 ~«6€*F7 1 73 28 =M 2 2 2 2 74 26 «=6F 1 1 1 5 78 47 F 1 79 49 M 1 80 56 M 82 60 M 1 64 FF. 29 75 OM 2 41 54 M 1 43 77 OF l 45 42 F 2 48 16 =6*F 50 44 M 51 35 OF 1 1 53 18 F 1 2 59 44 F 1 3 2 Thyroid pathology 3 1 1 Ctl 2 Thyroid pathology Exposed, L 1 1 1 1 3 3 2 1 2 2 1 2 2 2 2 2 2 ] 1 i 2 1 2 1 1 3 1 Ll 2 2 4 1 Thyroid pathology