}— — | a = | ACTIVITY (WELL C/M AT 30 DAYS) — a? & 7 7 ? ? 7 of 7 7 , 57 ? 10¢— ° o 10° a 10* t — ZN C L az “, c + [ = 103 10° &” | | a” Sf EACH POINT REPRESENTS ONE PARTICLE 7 Ett ty 10! WEIGHT Lf | til ( MICROGRAMS } 10? L Figure 3.24 Relation of particle weight to activity, Shot Tewa. 99 | ttitil 10?