-~18- rt ST rt pt td t ot tre of - CO “ 12 MEV 10°F J P qT [ [ to*E r q Tt T qT T T c co” 12 MEV 7 T C so r & — loo + ~ “4 GAMMA ACTIVITY - 2 2} io Te] - C 02 4 “| O04 O98 14 06 i2 6 2 Le | 4¢@ 68 MEV bm a =- ottlillittit iti d | { 2 4 6 8 1.0 1.2 1.4 MEV Fig. 3 = Gamma spectrum curves of the pH 3.3 ammonium citrate fraction from clam kidney sample I eluted on Dowex 50.