eee ee -23- 10* 7 a a A | = 7 4 _— = = -“ C 3 C = 1. 7 GAMMA 3.4 @ io? - - z +—Mn activity [- SPIKE 7 7 “ j LU | Reemi ia 0 I RE RESIN +I RE pH 3.41-s PErEITgg 7 2- Aiba id Ti tittit st | i ttt 12 A 6 8 1.0 L2@ 14 MEV Fig. 5 = a Gamma spectrum curves on the I-RE 3.4 i-s fraction (second elution) and on the I-RE resin from clam kidney sample I eluted twice on Dowex,0. The gamma spectrum curve for a Mm spike is also shown.