-12- Table 4. Average values by tissues for seven gamma-emitting radionuclides in samples from 11 whole tuna landed at Tokyo Values in picocuries between June and September, 1962. per gram of wet tissue. wr9o Tissue Muscle, light Muscle, dark Skin and scales Bone Liver Kidney Spleen Gonad Gills Heart Stomach Intestine Pyloric caeca Stomach content " Intestinal * n* K40 10 il 10 10 li 1l 8 5 9 ll LO 10 il 5 5 2.80 3.20 2.36 1.86 3.64 5.44 7.72 1.56 1.63 00 2.27 6.82 2.78 1.52 1.97. Number of samples. Mn-4 CoS0 gn65 Nb?> -00 04 .00 .00 00 00 28 00 09 00 ~00 .00 03 00 .17 08 ~12 15 14 -68 39 -00 -00 14 245 -08 ~-7L 18 OO .90 Ll ~29 OO ~42 2.49 -l1O0 1.42 7.93 2.62 87 5.66 3.92 2.85 1.61 1.68 00 30 18.7 3.57 12.4 20.6 42.8 5.76 3.42 8.67 1.99 4.17 1.77 2.80 10.3 RylO3 2.57 18.6 00 51.7 139. 129. .00 ,00 66.9 00 00 -00 16.9 -00 -00 Csl37 .O1 -O1 -02 202 12 07 - 40 00 -00 -10 .06 08 -02 -00 -10

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