“16s These data substantiate the general hypothesis, menfioned: atlier in this report, that the radioactivity in the tissues 5 appears to be due principally to mixed fission products, Devi- : ‘ations fron a straight line in the curves might be due to | selective uptake, either by the tissues themselves or because there was selective uptake in the animals used as food by the . fishes, In general. the slope of the curves compares favorably ; with the avemace: decline curve used for all food items discussed an . at the beginsing of thisreport. “t fr | Cc y as to amountsof radioactivity in comparable tissues were great- fk fee pe. t th he fe 2 be a 5 5 a > * 4 t ¥ b Pf b- “Differences betuccn the omni’yorous and carnivorous fishes t ost on March 26, 1954. These differences decreased with pase~ “ ; age of tine-and by January 29, 1955, werenegligible in some E‘tissues (Figure 4, ‘Pable XII), These sanedatawhen analyzed | by definite--species of conivoroul.fish (danse? -f4sh): and: ear~ : : ' niverous fish (grouper) show the same trends (Table ITZ). a Variation in radioactivity, associated with area and re- : Plated to fallout and. currentmevensnte within and around the ~ atoll, indicates an inerease An the contamination.ofthe“atoll from f south to north (Figure 5, Table Iv). _ The lagoonfishtaken in ‘the northern part of‘the Lagoon, oft Kabelle or vellu Island, [are comparable in levels of radioactivity‘to ree? fishes taken Jf im thts region. ‘the two flying fish taken outetde the atoll Beare remarkablyalikein thesue radioactivity. - conn 3 oy a toe eve" enumerate genee |