oR
OE
ORES
UEasap MERGE
“15~
ebm
The shore birds contained greater qnounts of radioactive
Bhortly after the
&
a materials in the different. organs and tissues
fallout at Rengelap than did the ferns, A similar tendency was
noted in 195 at Riwetok following: Mile shot (see WT-E16
(UNFr-33))."
Hovever, the Average. levels of activity in the
organs of the shore birds decreased nore rapidly with increasing
time after fallout than did those of the terne;
These difter-
ences may be accounted for, in part at least, by the ditterenoea.
‘in feeding habits and ulgrational characteristics.
o
The average specific aetivities of the organs and tissues
‘of Rongelap terns are given in'Table V, With the exception ¢of ©
sheet
musole,“which is consistently low compared with the other
“tisbuee: ef terns may be divided 4nto three typea (Figures 10a
ang bye. {1} organs in whieh the decline is semilogarithatc,
kidney; (2) organs in which the decline is logarithmic - these
(3)‘rpana
‘ava, the beneAe ot”“2+33) and tleun (ro 177195), and
“Anwhich thevariability is extremelygreatam, the gid and
lung represent. this group.
on
.
oS tate ne TST
The shapes. of thiewadlogetivity.dealing
-qurves for the
different organs are“determined by a combination ef (1) avatl-~
ability of the tgotepes, (2) total“uptake and degree of seleckw
tive uptake ot different.Seotopen,.(3);vaahoagtive half-life,
‘Sf
ee and (4) Dlologteathalr-idte}
Sinesthe;‘ge meative effeats and
se
a
oS
a
el
nt
Ps
* Radloblological Studies|s+ + Oe Sits, p. 6.
wee aeth e PT
‘ae
micewe nmcetetenmtt
aaye
s
Bly yo
:
. non
SGONFIDENTI.
TES
5 emiSE ete RTT
ay AS Sg
“half-iife 40 days - these include the amusele, liver, and’
2m RiggRoy,ieee
SR be ie
a cEey COREew
“passes, there is no distinct pattern of relative activities:
‘between’different organs, 9) >
oS
oe The decline of radicactivity ievels in the organs and