864 STROMME Cs body burden, in the 137Cs/potassium ratio, and in the 87Cs per kilogram of body weight ratio. There is good agreement among the three ways of illustrating the '°’Cs body burden. Figure 5 illustrates the increase of '*"Cs when the values obtained at the first examination in March 1963 are set equal to 100. 300 MomarcH 1963) [] MARCH 1964 NN OCTOBER 1963 OCTOBER 1964 (a) 200 | (b) Y g y Viy ~ L Y4 Fig. 5—Increase in'’Cs body burden if values obtained in March 1963 : equal to 100. (a) Total 137 '°’Cs are set body burdens; (b) picocuries of'*’Cs ber gram of potassium; and (c) %’Cs per kilograin of body weight. iyiy 7 Y 100 -- Y iy yy y y y y4 0 4Z 7

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